Shoot the Piano Player (1960)

Charlie, once a classical pianist, has reinvented himself as a jazz musician in a seedy Parisian bar. When his brothers, Richard and Chico, show up seeking refuge from gangsters they’ve cheated, Charlie steps in to help them flee. However, complications arise when the gangsters track them down, putting both Charlie and Lena, a waitress at the bar, in peril as they fight to protect his brothers from danger.