How long was the musician who conceived The Lifehouse Method with his band?
Method Music: Method Music is a double-album of electronic music by the English composer and mathematician Lawrence Ball created using the compositional system that would become The Lifehouse Method, an online-based compositional project conceived by Pete Townshend of The Who to compose customized algorithmically-generated musical portraits. Pete Townshend:  His career with the Who spans over 50 years, during which time the band grew to be considered one of the most influential bands of the 20th century.
over 50 years