A quartet is a demanding setting for a trumpeter, but Tolliver was never at a loss for chops or ideas. He recorded the band live at Slug's in New York in 1970 and at a Tokyo concert in 1973 for his own Strata-East label. These have long since become collectors' items and are now being reissued with 41 minutes of unissued material from Slug's and 34 minutes from Tokyo.

Stanley Cowell is the pianist (and contributing composer) throughout. Cecil McBee and Jimmy Hopps are on the Slug's session while Clint Houston and Clifford Barbaro are on the Japanese concert. With the exception of Neal Hefti's "Repetition" and Monk's "'Round Midnight", the band's book consisted of the exceptional originals by Tolliver, Cowell and McBee.

The musicians in Music, Inc challenged each other but never left the audience behind. This was state-of-the-art hard bop played in all its diversity from harmonically dense mazes to modal open forms to gorgeous ballads. And these men could sustain interest with each other and the listener through sheer creative power.