(Cover) - EN Showbiz - Sir Paul McCartney took lead vocals on Steve Martin's track Best Love, telling Steve he has a "terrible" voice.

Music icon Paul teamed up with Steve for the song, which appears on the latter's latest album Rare Bird Alert.

As much as Paul appreciated the track, which is about marriage, he didn't think too much of actor/musician Steve's vocals and decided he should take lead.

"Paul arrived [at the session] and said, 'You know, when you said you were a terrible singer, I thought you were being humble, but you weren't,'" laughed Steve in an interview with guardian.co.uk.

Steve enjoys singing, although his true talent lies in playing the banjo and piano. He is also a famously gifted comic, achieving success in stand-up and appearing in hits such as The Pink Panther movies. The star always tries to bring a little humour when he performs, although insists music is at the heart of every concert.

"I've never advertised that it's comedy," he added. "I'm sneaking in a bit more because I never want people to be disappointed. And I don't feel that they do. They leave in a really good mood, and informed, in some way." (C) Cover Media