It will affect your tulpa based on the emotions that you associate with each sound. If you play some music that your brain associates with sad, then sure, you're gonna get some "sad" results. If you're playing something that your brain associates with happy, then you're gonna get "happy" results.
I recommend, however, that you use the tones
provided by me. They use brain entrainment techniques to artificially stimulate specific thought patterns in your brain, and are (generally) better than just regular music. Whatever floats your boat, though.