The Rolling Stones had a pseudonym they used for group compositions from 1963 to 1965. What was this?

Explanation

"The Rolling Stones" is the debut album by The Rolling Stones, released by Decca Records in the UK on 16 April 1964. The American edition of the LP had a slightly different track list and came out a month later with the added title "England's Newest Hit Makers". Two songs on this album are credited to "Nanker Phelge" - a pseudonym the band used for group compositions from 1963 to 1965. This album included the songs "Tell Me", "Now I've Got a Witness" and "Little by Little". The American edition also included the song "Not Fade Away".