US label; also appears as "Mainstream" only. Founded in 1964 by Bob Shad, who also ran the Sittin' In With, Jax (3), Jade, Shad, Brent and Time Records (3) labels. Mainstream issued many new recordings such as the first records by Janis Joplin and Ted Nugent, though also reissued many of the titles from the Shad and Time Records catalogs. Among the titles reissued were the 10 titles in Earle Brown's Contemporary Sound Series, to which they added 8 more titles. Early Mainstream releases used the catalog number system 5#### for Mono releases and S/#### for Stereo releases. via Discogs →