"As Tears Go By" is a song written by Mick Jagger, Keith Richards and Rolling Stones' manager Andrew Loog Oldham.

[4] "As Tears Go By" was one of the early compositions by Jagger and Richards; previously the Rolling Stones had chiefly been performing American blues and R&B tunes.

The result initially was named "As Time Goes By", the title of the song Dooley Wilson sings in the film Casablanca.

[9] Faithfull performed the song on the television show Hullabaloo, in the segment presented by Beatles manager Brian Epstein from London.

"Ten years later, on the sleeve notes for the Blazing Away album Marianne contradicted herself by referring to the record as "the song that Mick Jagger and Keith Richard wrote for me," concludes Hodkinson.

Billboard described the Rolling Stones' version as a "beautiful folk- flavored ballad...baroque, semi-classical smash hit!

"[10] Cash Box said the Stones gave the song a "hauntingly, plaintive slow-moving laconic, classical-oriented style.

"As Tears Go By" was one of the three songs, including "(I Can't Get No) Satisfaction" and "19th Nervous Breakdown", that the band performed live during their third appearance on The Ed Sullivan Show.

DJs across the country made "As Tears Go By" an in-demand hit when they started playing it from the band's recently released album December's Children (And Everybody's).

It peaked at number six on the American Billboard Hot 100, echoing the success the Beatles had attained the same year with McCartney’s plaintive ballad “Yesterday.” The song was later released in the UK in 1966 as the B-side to the single, "19th Nervous Breakdown".

[13][14] The song was performed as a duet between Jagger and Taylor Swift on 3 June 2013 at the United Center in Chicago, Illinois, for the band's 50 & Counting tour.