Douglas Lloyd Ingle—an American musician—is renowned for forming and leading the band Iron Butterfly. As the primary composer and lead vocalist, he crafted the band's iconic track In-A-Gadda-Da-Vida in 1968. HIngle co-authored other hits like Soul Experience, In the Time of Our Lives, and Easy Rider. After Iron Butterfly's dissolution in 1971, Ingle briefly collaborated with his former bandmates.