Åberg grew up in the northern Stockholm suburb Stocksund and started his musical career as a guitarist in rock bands as a teenager.
When he was paired up with the songwriter Paul Rein the two co-wrote songs that would become international hits and best-sellers with then largely unknown artists Christina Aguilera and Jessica Simpson.
They also co-wrote "I've Got My Eyes On You" which was released on Jessica Simpson's debut album Sweet Kisses that peaked at #25 on U.S.
In 2002 he co-wrote and co-produced "A Different Kind of Love Song" that was released by Cher on her 2002 album Living Proof.
Åberg worked as the manager of young Swedish singer/songwriter Ulrik Munther who he discovered in Lilla Melodifestivalen.