From 1925 until 1929, Compo issued Apex, Starr, Domino, Microphone and Lucky Strike records, as detailed previously; each side bore all of the issue numbers for whatever labels it appeared on, indicating either a great trust or an assumed lack of imagination on the part of the record buyers. The Apex and, generally, Starr issues bore the U.S. credit on leased sides and the Compo-chosen identity, true or otherwise, on Montreal-recorded sides, while the lower-priced labels used an amazing variety of assigned identities. The pseudonyms for vocalists were often, although not always, consistent while the pseudonyms for orchestras appeared to be chosen at random. The majority of the material originated with the U.S. Plaza firm, and these records appear today to have sold the best; other material was obtained from Autograph, Okeh, Gennett and possibly other sources. Compo also enjoyed a tie-in with Pathé from about 1925 to 1928, when Pathé joined the Cameo firm. Pathé did not use electrical recording until 1927, and many of the 1926 sides were in fact recorded in Compo's New York studios and issued simultaneously on Pathé and the Compo labels, since Compo had been using electrical recording since 1925. The result of all of this variety of sources and labels was a maze of numbers, mentioned previously as encountered but detailed below.

Notes

(1)	The only record I have seen in this series is a demonstration record for a radio manufacturer; there is a reference to the series in Alex Robertson's Apex list, but only one item is noted.
(2)	U.S. numbers
(3)	U.S. numbers through 4500 and some later; others are recoupled Okeh sides.
(4)	U.S. numbers through 4556, items thereafter are U.S. issue numbers where U.K. sides were used!
(5)	Went from 12129 to 15130 - reason unknown.
(6)	Not known if U.S. numbers or not.
(7)	The extent of Apex issues is as yet not known to me.
(8)	These numbers may have been duplicated by the above series.
(9)	The only evidence I have for this series is its listing in "Roll Back the Years" by Ed Moogk.
(10)	Presumably U.S. numbers but not verified.
(11)	These were the final recoupled issues of Okeh sides.
(12)	The following later series fit into this chart: 900 (Famous Artists), M-900 (Minerva), M-14000 (Minerva, Melotone), 18000 (Melotone-French). Compo-Decca also issued a 10000 series unrelated to, but duplicating, Starr 1000 numbers, as well as some other issues which may have duplicated much earlier numbers in various series.