In Harmony by Carina Caldwell [M/M]

Hendrix is an aspiring musician. Alaric is a medical student. It doesn't seem they've got anything in common, yet when Hendrix is sitting in his favorite coffee shop working on his next song and a handsome stranger returns his dropped tuning fork, the chemistry is instant. Despite their compatibility, they find that when you don't know someone very well, it's easy to misunderstand their motives. If they can get over their misunderstandings, maybe Alaric and Hendrix can finally find themselves in harmony.

https://www.amazon.com/dp/B0GVJP9689