"All By Myself" is Celine's cover version of a power ballad written and performed by Eric Carmen in 1975.
The song borrows heavily from the second movement (Adagio Sostenuto) of Sergei Rachmaninoff's Piano Concerto No. 2 in C minor, Opus 18, which Carmen believed was in the public domain. After the record had been issued, Carmen had to come to an agreement with the Rachmaninoff estate. Early versions, therefore, only give writing credit to Carmen while later versions also credit Rachmaninoff. .