Since the 1960s, composite airframes and quieter, more efficient engines have become available, and Concorde provided supersonic passenger service for more than two decades, but the most important lasting innovations have taken place in instrumentation and control.

Since the 1960s, the islands have diversified away from their traditionally agriculture-based economy towards tourism and financial services, becoming one of the wealthiest areas in the Caribbean.

Since the 1960s, blackjack has been a high profile target of advantage players, particularly card counters, who track the profile of cards that have been dealt and adapt their wager and playing strategies accordingly.

Since the 1960s / 1970s, Blissymbols have become popular as a method to teach disabled or handicapped people to communicate.

Since the 1960s, applied ethics has revived the ideas of casuistry in applying ethical reasoning to particular cases in law, bioethics and business ethics, so the reputation of casuistry is somewhat rehabilitated.

Since the international adoption of the MKS standard in the 1940s and the SI standard in the 1960s, the technical use of CGS units has gradually declined worldwide, in the United States more slowly than elsewhere.

Since the early 1960s, it has been known that volcanism has occurred on other planets and moons in the Solar System.

Since then McLean has stated that the lyrics are also somewhat autobiographical and present an abstract story of his life from the mid-1950s until the time he wrote the song in the late 1960s.

Since at least the 1960s, macroeconomics has been characterized by further integration as to micro-based modeling of sectors, including rationality of players, efficient use of market information, and imperfect competition.

Since at least the 1960s, when Marc Bloch's Feudal Society ( 1939 ) was first translated into English in 1961, many medieval historians have included a broader social aspect that includes not only the nobility but all three estates of the realm, adding the peasantry bonds of manorialism and the estates of the Church ; this is sometimes referred to as " feudal society " since it encompasses all members of society into the feudal system.

Since the 1960s, West and later reunified Germany has been attracting migrants primarily from Southern and Eastern Europe as well as Turkey, many of whom ( or their children ) over time acquired German citizenship.

Since the 1960s rather complex mathematical models have been developed, facilitated by the availability of high speed computers.

Since the 1960s, academic history has seen the emergence of new approaches and topics such as social history, demographic history, ethnic history, women's history, environmental history and cultural history.

Since the 1960s and 1970s a large body of scholarship has provided evidence and analysis of the extent to which heterosexuality and homosexuality are socially organized and historically changing.

Since the 1960s various Scottish shops and manufacturers have created vegetarian haggis, substituting various pulses, nuts and vegetables for the meat in the dish.

Since the 1950s and 1960s in particular, the Irish have become assimilated into the British population.

Since the early 1960s, it has published 12 volumes, the first in 1971 and most recently in 2008 ; three more volumes are planned.

Since the 1960s, he has worked with public interest, consumer, family farm, environmental and community organizations at the local, state and national level.

Since the 1960s, orca has steadily grown in popularity ; both names are now used.

Since the 1960s, a theory based on Linear B phonetic values suggests that Linear A language could be an Anatolian language, close to Luwian.

Since the beginning of the 1960s Ladoga has become considerably eutrophicated.

Since the 1960s, the mainland population has declined by 60-70 %; though there has been a small increase on Motunau Island.

Since the 1960s, the number of people claiming Native American ancestry has grown significantly and by the 2000 census, the number had more than doubled.

Since the 1960s the Chief rabbinate of Israel has moved somewhat closer to the positions of Haredi Judaism.

Since it requires only five players, it would seem to fall into the category of chamber music -- yet it calls for a double bass, an instrument generally regarded as symphonic.

Since much of the double bass's range lies below the standard bass clef, it is notated an octave higher than it sounds.

Since there is no established instrumental ensemble that includes the double bass, its use in chamber music has not been as exhaustive as the literature for ensembles such as the string quartet or piano trio.

For most bands and most small-to mid-size venues ( e. g., nightclubs and bars ), standard bass guitar speaker enclosures or keyboard amplifiers will provide sufficient sound pressure levels for onstage monitoring. Since a regular electric bass has a low " E " ( 41 Hz ) as its lowest note, most standard bass guitar cabinets are only designed with a range that goes down to about 40 Hz.

Since much very low bass is felt, sub-bass can be ' augmented ' using tactile transducers.

Since bars are fairly massive compared to strings, better results are obtained by using bows from the larger string instruments, at least a cello bow and often a double bass bow.

Since the 1960s, the electric bass is the standard bass instrument for rock and roll, jazz fusion, heavy metal, country, reggae and pop music.

Since instruments were little used, a cappella arrangements used wordless onomatopeia to mimic instruments ; the bass singing " bom-bom-bom ", a guitar rendered as " shang-a-lang " and brass riffs as " dooooo-wop-wop ".

Since that time, most bass anglers have used bait casting or spinning tackle, using either artificial lures or live bait ( See Fishing rod, Fishing reel ).

Since the early 1990s, fly fishing for bass, particularly smallmouth bass, has again become popular, using fly patterns, rods, and fly lines suited for bass.

Since disbanding, Mike Watt has released four solo albums and been involved in numerous musical projects including the longstanding bass duo, Dos ( with ex-Black Flag bassist and wife, Kira Roessler ), Banyan ( with Jane's Addiction drummer, Stephen Perkins ), Jay Mascis and the Fog, the Stooges and the Unknown Instructors ( along with George Hurley ).

Since the bass could also now be louder, the rest of the band could also play at higher volumes, without fear of being unable to hear the bass.

Since most people have medium voices, they must be assigned to a part that is either too high or too low for them ; the mezzo-soprano must sing soprano or alto and the baritone must sing tenor or bass.

Since 1992, the lineup has consisted of Ira Kaplan ( guitars, piano, vocals ), Georgia Hubley ( drums, piano, vocals ), and James McNew ( bass, vocals ).

Since 1992, the band has consisted of Rick Savage ( bass, backing vocals ), Joe Elliott ( lead vocals ), Rick Allen ( drums, backing vocals ), Phil Collen ( guitar, backing vocals ), and Vivian Campbell ( guitar, backing vocals ).

Since 2001 the band, comprising Brooker, Fisher, Geoff Whitehorn ( guitar ), Matt Pegg ( bass ), and Mark Brzezicki ( drums ), has made several tours of mostly Europe, but also Japan and the US.

Since 1994, a new version of the band has toured, with Parsons performing live acoustic guitar, keyboards and vocals, with various lineups.

Since the 2000s, guitar amplifiers began having built-in multi-effects units or digital modeling effects.

Since the output of an electric guitar is an electric signal, the signal may easily be altered using electronic circuits to add " color " to the sound.

Since then, the RG series has introduced fixed bridge models, but Ibanez still produces the RGA series with an arched top to differentiate from the RG series. The arched top allows for added comfort while playing the guitar.

Since Castelnuovo-Tedesco did not play the guitar, Segovia provided him with guitar compositions ( Ponce's Folias variations and Sor's Mozart Variations ) which he could study.

Since then, Frank Gambale has been recognized as one of the major contributors in guitar technique.

Since that time his 100 guitar piece has been performed in cities all over the U. S. and Europe.

Since becoming president of the BRDC in 2006, Hill says he has abandoned the guitar, being " too busy doing school runs and looking after pets.

Since vocalist Dez Cadena was switching to guitar, the band then invited Rollins to audition.

Since the late 1970s Mosson has most frequently played rhythm guitar on stage.

Since the 1990s, Stamos has regularly performed with The Beach Boys during their summer tours, playing drums and guitar, and singing some of their hit songs such as " Forever.

Since Nightfall, bass guitar has been played by sessional member Oliver Holzwarth, and Hansi has been able to devote all his attention to singing.

Since the 1960s, several generations of guitar performers, professors and composers have been formed under the Cuban Guitar School at educational institutions such as the Havana Municipal Conservatory, the National School of Arts, and the Instituto Superior de Arte.

Since the 1950s the jeli have also added the guitar to their repertoire which now plays a significant role in much of jeli music.

Since Yamanaka was not able to play the guitar well yet, Yoshiaki Manabe, the guitarist of the hair metal band Persia, joined them.

* Zel ( formerly known as Aphazel ) – guitar ( since 1992 ), lead vocals ( Since 1998 ), bass guitar ( 1992 – 1998 ), drum machine ( 1992 – 1993 ), keyboards ( 1993 – 1998 )