Ingle's father Lloyd, a church pianist, introduced him to music at an early age. Ingle moved from his native Nebraska within three months of his birth to the Rocky Mountains and after spending his impressionable years as a mountain child moved to San Diego, California.

His work is featured on Iron Butterfly albums Heavy, In-A-Gadda-Da-Vida, Ball and Metamorphosis. Most famously, he authored the band's biggest hit, the epic seventeen-minute "In-A-Gadda-Da-Vida." When he originally wrote the ...