In anticipation of his new album of duets, Tony Bennett is giving fans an early peek at the song he recorded with Carrie Underwood. The two trade vocals on 'It Had to Be You,' and if you close your eyes and forget Underwood is married to NHL bruiser Mike Fisher, you'd swear there was more than just singing going on. 

Idolator premiered the song on Wednesday afternoon, but fans of both singers have been able to get glimpses into what the recording may sound like for over a month. Bennett shared a 20-second clip of the pair trading vocals in early August. He also revealed that they'd both appear in the season opening episode of CBS's 'Blue Bloods' starring Tom Selleck on September 23. The album -- titled 'Duets II' as it's his second album of couplings -- will be available on September 20.

The song is a deviation from just about anything Underwood has attached her name to thus far. The smoky piano is a sound far more appropriate in a classy hotel lounge than a rowdy arena, but she has no troubles laying her vocals down gracefully. There's obvious chemistry between the two, which was no doubt kept on a professional level.

Faith Hill and Willie Nelson are the other country artists chosen to sing with the 84-year-old Bennett on 'Duets II.' Lady Gaga, John Mayer, and the late Amy Winehouse also appear on the album.