Roots of REO Speedwagon

Terrance James Reid, who was nicknamed Superlungs, was an English musician, songwriter and guitarist, best known for his emotive style of singing in appearances with high-profile musicians as vocalist, supporting act and session musician. As a solo recording and touring artist he released six studio albums and four live albums. Described as an "artists' artist" by Rolling Stone, Reid was recognised by his contemporaries as an eminent talent in English rock music, both as a guitarist and a vocalist. Robert Plant praised his vocal "flexibility, power and control" and Graham Nash was quoted as saying he should have been "a gigantic star".

Donald William Felder is an American musician who was the lead guitarist of the rock band Eagles from 1974 to 2001. He is known for co-writing several of the band's songs, most notably "Hotel California". Felder was inducted into the Rock and Roll Hall of Fame in 1998 with Eagles and was inducted into the Musicians Hall of Fame and Museum in 2016.

Sin After Sin is the third studio album by English heavy metal band Judas Priest, released on 8 April 1977 by Columbia Records, and on 22 April in the UK, by CBS Records. Produced by Deep Purple bassist Roger Glover, it was the band's major label debut, their first album for the label, and their only album to feature drummer Simon Phillips, a studio musician who replaced drummer Alan Moore for the recording sessions.