Bach - brandenberg concerto no.1 allegro - Classical Loop - 3.1MB - 0.18 - concerto, baroque, orchestra - Brandenburg Concerto No.3 - 1st movement (Allegro) in G major from The Brandenberg concertos by Johann Sebastian Bach. featured in the 1968 electronic music album, Switched-On Bach played by Wendy Carlos (composer for Tron soundtrack) also used in the 1988 film Die Hard and theme of the Antiques Roadshow.