MCA Master Series had a collection of 15 artists, who released both solo albums and some collaborative albums.  They worked together more frequently than you might expect, which lent to some nice cross-marketing and song consistency.

Acoustic Alchemy

Albert Lee

Billy Joe Walker Jr.

Booker T. Jones

Caldwell Plus

Edgar Meyer

Giles Reaves and Jon Goin

Giles Reaves

Jerry Douglas

John Jarvis

Jon Goin

Larry Carlton

Matt Rollings

Robert Greenidge and Michael Utley

Strength In Numbers

Walter Hyatt