 In 1998, PolyGram and its imprints were purchased by Seagram, which merged the company with its MCA Records label and imprints to create the gigantic Universal Music Group.This had the result of Summer's MCA, Oasis, Casablanca, Geffen, and Mercury releases now being owned by one conglomerate, Universal Music.This catalogue of Summer's material stretches from 1971 to 1987 for Universal Music Group.