Andrew Taggart and Alex Pall of The Chainsmokers are best friends with the groom and performed at The Rittenhouse Hotel for a wedding of epic proportions alongside the 18-piece EBE band, LA Starz.

When they aren’t selling out stadiums, it seems The Chainsmokers love nothing more than supporting their friends, even if that means playing their own music with a house band. The duo sang their hit song “Paris” with the band to a crowd of stargazing wedding attendees.

They did a similar stunt when they showed up to a high school earlier this year, though obviously this carries more personal weight. Check out the video below.