Complex sentence: In 1979, he teamed up with Fletcher to form French Look, an early incarnation of Depeche Mode that was later re-named Composition of Sound, following the addition of Martin Gore.
Split into simpler sentences: In 1979, he teamed up with Fletcher to form "French Look", an early incarnation of Depeche Mode. The band was re-named "Composition of Sound", following the addition of Martin Gore.