(IMHO there’s nothing like listening to the Modzitz Kaddish & Shoshanas Yaakov. I’m sure you have your favorites too.)
I do have my favorites, including those.
Aside from his preserving Modzitzer nigunim for us and future generations, he composed many beautiful nigunim of his own, some of which are standards which some people are surprised to learn were composed after the war.
These include the famous Eishes Chayil, Mizmor L’Dovid, and Yosis Alayich.
Y’hi zichro baruch.