Complex sentence: Brea started his professional career in 1956, becoming an outstanding musician on a great variety of instruments, being able to play all saxophone and flute families, as well as oboe, clarinet and bass clarinet.
Split into simpler sentences: Brea started his professional career in 1956, becoming an outstanding musician on a great variety of instruments. He was able to play all saxophone and flute families, as well as oboe, clarinet and bass clarinet.