Collection of live recordings featuring the Gerry Mulligan Quartet on the A-Side and the Gerry Mulligan Sextet on the B-Side. The quartet here is with Jon Eardley, Red Mitchell, and Chico Hamilton; the sextet with Bob Brookmeyer, Zoot Sims, and Larry Bunker with Eardly and Mitchell.

The A-side was recorded at Stockton High School in November 1954, the B-Side at Hoover High School in San Diego.

My copy is an original mono pressing on Pacific Jazz from 1955, via Crossroads Records in Portland OR. The sleeve is pretty worn, but the vinyl sounds great.