Nick Jonas Plays Music for Patients at a Children's Hospital

Nick Jonas makes a surprise visit with Musicians On Call at the Children’s Hospital at Montefiore on Monday afternoon (September 8) in New York City.

The 21-year-old singer played the patients a few songs, talked with them and took a bunch of pictures.

PHOTOS: Check out the latest pics of Nick Jonas

Earlier that day, Nick stopped by On Air with Ryan Seacrest during the Ryan Seacrest Distinction Launch at Macy’s Herald Square.

That evening, Nick shared his excitement for fall on the east coast via Twitter.

“Temperatures already dropping a little bit in NY fall in the city you can’t beat it,” he tweeted.

10+ pictures inside of Nick Jonas out and about…