Do I have s case on songs I created with s partner, he then left and is selling albums and playing live with the same songs

Let me try to recast your facts in a manner a lawyer can understand, and then I'll have an answer for you. You and the partner wrote a few songs. He has recorded those songs onto an album, and is playing them live. I assume that (1) he is not giving you credit for the songwriting, (2) is not using any of your performance -- just the songwriting, (3) there is no written agreement for him to take over sole ownership of the songs, and (4) he is making some money from those songs. The following is based upon those assumptions; if the assumptions are incorrect, then the advice would be different. 1. You have rights to the songwriting and whatever profit that has brought. In the absence of a written agreement, both of you jointly and severally own those songs, and can use them, license them, etc. 2. You need to consult a lawyer experienced in entertainment law to disucss what your next step might be, from a cease-and-desist letter to litigation. While what you describe is not, technically, copyright infringement, you do have a right to reimbursement for your contribution to the songs.