Welcome to J. T. Hargreaves Basses & Guitars. With his Bluejay model bass guitar, Hargreaves is revolutionizing the acoustic bass guitar with a bracing system that is the result of collaboration with Dr. Michael Kasha and Richard Schneider since 1987, thus producing an instrument with superb tonal clarity. Hargreaves is not only building basses, but is also producing classical and steel string guitars.