Marianne Faithfull, the songstress who helped spur music's British invasion and was a muse to the Rolling Stones, died Thursday at 78.

Marianne Faithfull, Grammy-nominated singer, actress, and one of the most prominent female voices of the British Invasion, died in London on Thursday. She was 78. The cause of death was not disclosed.

Marianne Faithfull's first hit, "As Tears Go By," was recorded when she was just 17 years old after she met with the manager of the Rolling Stones at a party.