Upton String Instrument Company

This book is an incredible collection of 36 famous bass solos and lines written in bass clef from 18 masters, including Jimmy Blanton, Milt Hinton, Oscar Pettiford, Ray Brown, Paul Chambers, Sam Jones, Richard Davis, Stanley Clarke, and Michael Moore.

A very nice arco string but not quite my choice of a jazz string, they felt a little thin and wiry similar to many of the Correlli. They lacked in pitch center and didn't give a good clean fundamental..  With a bow they really speak.