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Grigor Dimitrov, Tommy Haas and Roger Federer give their rendition of the classic hit song from Chicago, 'Hard To Say I'm Sorry', during the BNP Paribas Open in Indian Wells. Video courtesy Roger Federer

Federer's "Backhand Boys" Take On Chicago

Swiss maestro releases second music video with Dimitrov and Haas

The late ‘90s had the Backstreet Boys and N’Sync, while the late 2000s had the Jonas Brothers. Could the "Backhand Boys" become this decade’s boy band craze?

Roger Federer released the world debut of himself, Grigor Dimitrov and Tommy Haas taking a second crack at singing “Hard To Say I’m Sorry,” the classic ‘80s song from American rock group Chicago, during an on-court interview at the BNP Paribas Open on Thursday. He then posted the video to his Twitter account shortly after.

The new release is a follow-up to their initial attempt at the track in January. Haas’ father-in-law, world-renowned record producer and musician David Foster, once again accompanied them on piano.

Looking more comfortable as a man band, the trio’s vocal range has improved noticeably over the past two months. They even upped the production value of the new release by including a cameo appearance from Novak Djokovic.

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“I actually didn't know the lyrics very well, so we were reading on the iPhone. And next thing you know, it's like, this is too funny not to put it on social media,” said Federer about their first video. “So we put it out there. People had a blast over it, laughed at us, and I thought it was great.

“As we regrouped here, we thought we could do it again, but this time kind of on a playback, making the boys actually sound nice and not like cats and dogs singing, like in Australia,” he added. “Now it sounds somewhat okay. It’s still so bad, yet I think it's actually so good.”

The Swiss maestro returns to a more familiar vocation on Saturday when he plays either Jack Sock or Kei Nishikori for a place in the BNP Paribas Open final.