In addition to writing and playing his own tunes, Zack was a gifted bass player. He performed and recorded with dozens of other musicians in many genres, on both upright bass and bass guitar. Probably the biggest body of that work was with the four groups listed below. They made some amazing music together — check it out.
Examples of his playing with other musicians and groups, some quite well known and all very talented, can be found here.
And a playlist featuring some of Zack’s work as a bass player, curated by his longtime musical friend and musical partner Dan Knobler, can be found here.