Oh I would listen to the same CD over and over, and now I cannot get it out of my head if I tried :P. I definitely was not working toward a goal; I just found

Oh I would listen to the same CD over and over, and now I cannot get it out of my head if I tried :P. I definitely was not working toward a goal; I just found it surprisingly fun (and pleasantly distracting) while suffering commutes. I didn't investigate alternatives for audio. If I were riding a bus, I would use DuoLingo app (which I found almost addicting).