No. The word guitarist's is a possessive noun (of or belonging to a guitarist). There is no adverb form.
There is no standard collective noun for the noun 'guitarists', in which case a noun suitable for the situation is used. The collective nouns for musicians can be used such as 'a bandof guitarists' or 'an ensemble of guitarists', or the number in the group such as 'a duo of guitarists' or 'a trio of guitarists', etc.
There are several famous guitarists in the world. A few of the guitarists are Tom Morello, John Mayer, and Slash.
yes
BOBODOGGU
Black Veil Brides has two guitarists; Jake Pitts and Jinxx. Both guitarists are Atheists, and are not religious.
Many guitarists move their mouths along with the notes they play when soloing. However this is up to the individual guitarist, and not all do.
There are many famous guitarists, including Joe Satriani, Steve Vai, Eric Clapton, Eddie Van Halen, Richie Sambora, and others.
A guitar, a pick and their hands.
jimmy Hendrix
plectrum.
Clapton
Guitarists and/or musicians