Wiktionary
soft rock
n. A comparatively unaggressive, melodic rock music genre in which the arrangement and lyrics are emphasized more than the beat; a reaction against hard rock.
Wikipedia
Soft rock
Soft rock or light rock is a style of music that uses the techniques of rock music to compose a softer, more toned-down sound.
Soft Rock (album)
Soft Rock was the last official release by Minneapolis band Lifter Puller. Released in 2002, it was a compilation of nearly all of the band's songs—save those found on their final studio album, Fiestas and Fiascos—and a few other odds and ends. The version of "Lie Down on Landsdowne" contained on Soft Rock differs from that found on Fiascos.