Adams was a member of four-piece boyband A1, who won a BRIT Award in 2001 for Best Newcomer and had two number one singles, "Take On Me" (the chart-topping song that was originally made famous by and written by the Norwegian band "a-ha") and "Same Old Brand New You", before separating.Whilst in the boyband, Adams also scooped a Smash Hits Poll Winners Party Award for Most Fanciable Male in 2001.

It was announced in 2009 that A1 were to reform to compete to represent Norway in the 2010 Eurovision Song Contest. A1 then resigned with Universal Music Group and went on to record two further studio albums "Waiting For Daylight" and "Rediscovered" initially release in Norway which Adams co-wrote and produced. A1 are currently touring throughout the world and continue to release their new albums in the territories they visit.