Lou Gramm's soaring vocals were the cornerstone of the Anglo-American rock band Foreigner, which enjoyed a dozen Top 20 hits between 1977 and 1984, including "Cold as Ice," "Hot Blooded," "Double Vision" and "I Want to Know What Love is. " Gramm also co-wrote most of the band's biggest songs with guitarist and founder Mick Jones, with whom he enjoyed a contentious relationship over the course of nearly four decades. Though the band had mined its greatest successes with high-voltage arena rock, Gramm sought to introduce synthesizers and other electronic elements into its sonic palette in order to keep the band in line with then-current trends, while Jones remained fastidious about guitar-driven rock and power ballads. Frustrated with the schism, Gramm generated a pair of well-received solo albums as well as a Top 5 single in "Midnight Blue" (1987). However, he was unable to sustain the same degree of success on his own as he had enjoyed with Foreigner, and soon returned to the group for another decade before splitting from them once again in 2003 to pursue a mix of mainstream and Christian rock. Despite the bad blood that flowed behind the scenes with Foreigner, Lou Gramm's extraordinary vocals helped to produce one of the most popular catalogs of rock songs in the 1970s and 1980s.