(Cover) - EN Showbiz - Alec Baldwin gazed into girlfriend Hilaria Thomas' eyes during a performance at Steve Martin's recent concert.

The 53-year-old actor took to the stage at good pal Steve's show with the Steep Canyon Rangers at Guild Hall in East Hampton, New York on Saturday night.

Alec sang alongside banjo-playing comedian Steve, 65, with a rendition of Jubilation Day, a track from the album Rare Bird Alert which Steve recorded with the Steep Canyon Rangers.

Alec's current girlfriend, 28-year-old yoga instructor Hilaria, was in attendance and a source told New York Daily News that the actor was "looking into her eyes" as he warbled.

Steve was thrilled to have Alec join him on stage, and his introduction proved the pair enjoy nothing more than a little friendly teasing. When welcoming Alec, he made a play on words which entertained crowds no end.

"I'd like to introduce one of the best bass singers I know and that's without the 'b!'" laughed the comic. (C) Cover Media