Sonobeat used a letter-number cataloging scheme to identify its commercial releases. Singles used letter codes followed by three numbers and albums used letter codes followed by four numbers. On singles, the catalog number appears in the left central portion of the label.

Letter codes indicate the general musical genre of the release:

C = country
G = gospel
P or PS or PV = pop vocal
PF = pop folk
PJ or P-J = pop jazz
R = rock or R&B

The s or S indicates a stereo release, and m or M indicates a monaural release. Plymouth Rock's single Memorandum was misidentified as R-s114. Because it was issued only in a monaural mix, it properly should have been R-m114.

Singles released in 1967 were sequentially numbered within each genre: rock singles were numbered in the 100s, pop vocals in the 400s, and pop jazz in the 500s. For example, R-s101 was the Sweetarts' A Picture of Me (also Sonobeat's first release). Sonobeat's second release was The Lee Arlano Trio's pop jazz instrumental, PJ-s501. Sonobeat's third release was Don Dean's pop vocal, PV-s401, and R-s102 was simultaneously Sonobeat's fourth 45 rpm release, Sonobeat's second rock release, and the Lavender Hill Express' first release. Beginning in 1968, the awkward numbering sequence system was replaced with a simplified system: all singles, regardless of genre, were sequentially numbered, as released, from 103 through 122.

The David Flack Quorum's album Mindbender broke pattern and was released as DFQS-100.

Sonobeat's non-commercial album releases -- advance pressings and demos -- used a slightly different cataloging system: the letter codes were either HEC or WEJ and the numbers followed a system assigned by Sonobeat co-founder Bill Josey Sr.

Sonobeat changed its label color from a pale yellow pattern to a light blue-gray pattern beginning with its 1968 releases, although one 1968 single, Watch Out by the Lavender Hill Express, reverted to the pale yellow pattern.