You may have not known the name Toots Thielemans, but you have probably heard his music. He had a huge hit in 1961 with Bluesette, with its guitar and whistling played in unison. The song was used in a long running anti-smoking public service spot. The harmonica playing in the Sesame Street theme? That was Toots. He played with many musicians over the years including Miles Davis, Bill Evans and Jaco Pastorius.