Foo Fighters are making the most of their time in New York this week. The band's fun continued with the second night of their week-long 'Late Show With David Letterman' residency and also worked in a post-Letterman appearance at a Danny Clinch photo book celebration.

First up, the Foo Fighters welcomed Ann and Nancy Wilson of Heart for a rocking rendition of the track 'Kick It Out' on the Ed Sullivan Theater stage. A joyous David Letterman greeted the sisters and thanked Foo Fighters for bringing out their latest guests. The Wilson sisters will be part of Foo Fighters' HBO documentary series, 'Sonic Highways,' which debuts on HBO this Friday.

As previously stated, the series will follow Foo Fighters as they hit some of the biggest music scenes in the U.S. and get the lowdown on each town from the respective acts that helped shape the scene. Ann and Nancy Wilson, of course, were big in helping to grow the Seattle music scene over the years.

Also, Foo Fighters decided to have a little post-show fun after Monday's performance on 'Letterman' with Zac Brown, heading to New York's McKittick Hotel where photographer Danny Clinch was holding a party for his 'Danny Clinch: Still Moving' book. Clinch performed a covers set with his Tangiers Blues Band at the event, and welcomed such guests as Dave Grohl and Taylor Hawkins from Foo Fighters, Jesse Malin, Jane's Addiction's Perry Farrell and his wife Etta to join in on the fun. They rocked out such classics as the Rolling Stones' 'Miss You' and Bob Dylan's 'From a Buick 6.'

Courtney Love, who according to was spotted having a good time with her onetime foe Dave Grohl. According to the site's report, the pair were seen laughing, crying and hugging while knocking back a few tequila shots. The pair were also reportedly overheard making a $10,000 bet on who could get the most strippers at Scores. Though the pair didn't follow through on the bet that night, Love later tweeted that the bet was still on at a later date out west.

All's well that ends well, as the peace that was started at Nirvana's Rock and Roll Hall of Fame induction has carried over between Grohl and Love.

Dave Grohl, Taylor Hawkins + Perry Farrell + Others Perform 'Miss You'

Dave Grohl, Taylor Hawkins + Others Perform 'From a Buick 6'

You Think You Know Foo Fighters?

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