Nick Jonas took on the role of Musical and Creative Director for Demi Lovato's Neon Lights Tour, which kicked off in February 2014. His responsibilities included overseeing the musical arrangements and the overall creative direction of the tour, showcasing his talents beyond performing. The collaboration between Jonas and Lovato highlighted their long-standing friendship, stemming from their time together at Disney.
For more details about their partnership during the tour, you can check out the article from Rolling Stone here.
If you're interested in further information about their tours or performances, let me know!