Charles O'Meara (March 13, 1953 – October 20, 2018) better known as C.W. Vrtacek, was an American multi-instrumentalist and composer. He was a founding member of Forever Einstein and group member with Biota.
Vrtacek took up guitar at the age of 11, and played in the band Dancing Lessons before starting Forever Einstein with Dancing Lessons drummer John Roulat.
In 2013, Vrtacek, along with Nick Didkovsky of Doctor Nerve, conceived and released the "$100 Guitar Project", a recorded project based upon the "journey" of a guitar purchased from a secondhand music shop for $100 that passed through the hands of over 65 players, each of whom recorded a piece with it and then signed it, in turn passing it along to the next player to do the same. The two-CD set, released on Bridge Records, features performances by such noted guitarists and musicians as Alex Skolnick, Fred Frith, Nels Cline, and many others.