The subject of Howard Hawks and music is inexhaustible. Obviously for the importance of music in creating mood and developing characters, but also for the way that scenes with music are staged or the kind of music that is used and how various musicians appear in his films, and how all of these things develop over the course of his career. It is at the centre of his artistry. Here is a wonderful and typical example from Ball of Fire (1941), shot by Gregg Toland. Gene Krupa plays "Drum Boogie" on a box of matches.
Two earlier posts with musical scenes from Hawks's films are here:
Only Angels Have Wings