One such version was developed in Hollywood, California with the help of Sammy Hagar. It features a solid body and two humbucker pickups. There is a standard Yamaha neck and the bridge pickup is a Seymore Duncan JB. There are separate volume controls as well as a rosewood fretboard with a Cabo Wabo on the 12th fret.

Wes Borland from Limp Bizkit has also helped to develop a Signature Series Yamaha guitar. While in his earlier years in the recording industry he had an official endorsement with Ibanez, they soon asked him to modify one of his guitars so they could market it which ended the relationship. Through his collaboration with Yamaha he was able to design his own guitar from the ground up which became a Signature Series.

There are also several lines of Signature Series basses such as one poduced with the help of Billy Sheehan. Sheehan is known for his work with such names as David Lee Roth, Mr. Big and Steve Vai. This particular design features a body composed of alder and a neck made of maple. It has 21 frets and Hip Shot detuners. It also comes complete with 2 DiMarzio pickups. Each one of them has their very own output. Since Sheehan prefers bolt-on necks, this particular line does not make use of a through-neck design.

Michael Anthony from Van Halen also has his own Signature Series bass. It uses the neck-through design which is commonplace on the BB series only it has been streamlined. The body too has been smoothed out and features deeper cutaways then the standard models. For pickups, this bass uses an Alinco Split single coil, an Alinco V Soapbar and HipShot detuners.

Even Nathan East who is known for his work with names like Eric Clapton, Phil Collins as well as Stevie Wonder has his own Yamaha Signature Series which is a five-sting design with a double cutaway body made of both maple and alder. It comes with a 24 fret neck composed of maple and mahogny as well as two stacked Alinco humbucker pickups. There is also a bridge pickup that has individual saddles to allow for a better inotation. Featuring several control knobs as well as an equalizer, this Signature Series has a lot of versitality.

The Signature Series are aptly names as such. Each one stars out it life as a dream instrument from a big name in the recording industry. Through the effort and collaboration of the recording artists and Yamaha, this dream becomes a reality. Not only does the musician get their dream instrument, but anyone can too. They are a perfect match of style and functionality making them a highly sought-after instrument by many.

One thing that is advantageous for fretless bass guitars is that these guitars are not limited to certain temperaments or tuning systems. For this reason, fretless bass guitars can play music that is not only in 12-tone scales, which are very typical of experimental music. Moreover, fretless bass guitars are capable of absorbing energy from the vibrating strings much faster, thus producing a distinctive sound. This causes the pizzicato of fretless bass guitars to sound more damped than the other guitars.

According to most musicians, the fretless bass guitars sound similarly to the double bass guitar which are more popularly used in Jazz, R&B, and Funk music genres. This is probably the reason why there has been a great demand for these types of guitars leading to its widespread popularity.

Most fretless bass guitars have fingerboards that are made of hardwood. Epoxy coating is applied to these fingerboards to lessen the wear caused by the round-wound strings. On the other hand, other strings can also be used to lessen the wear, such as the ground wound, nylon tape-wound and flat-wound strings.

Although it is quite difficult to use fretless bass guitars which require more training for the exact positioning and shifts of the fingers, a lot of famous guitarists prefer to use these guitars. Some of these important guitarists are Juan Alderete who is the bassist for the Mars Volta, Bill Wyman of the Rolling Stones, and Jaco Pastorius who is considered as the most influential fretless bassist of all time.

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