"Bourée" by Jethro Tull.
OK, boys and girls, back to the 60s: It is 1968 and Jethro Tull's frontman and virtuoso flautist Ian Anderson was living in a London flat. Right under his bedroom lived a music student who frequently played a baroque lute piece on classical guitar. Anderson had been looking for an instrumental tune to add to his concert repertoire. Master guitarist Martin Barre was auditioning for the group and, coincidentally, he could play the piece and had the sheet music. They recorded it in '69 as the B-side to "Fat Man" and it appeared on their "Stand Up" album. It became a staple of Tull's live lineup. Charted in most of Europe but, surprisingly, not in the UK. Covered by Led Zeppelin and by Yngwie Malmsteen. It became the sign-off music for the Armed Forces Network TV in Europe during the 70s. Song? Answer: "Bourée" by Jethro Tull. Originally composed for the lute in the early 1700s, J. S. Bach's "Bourrée in E minor for Lute"