There's one for hearing too i think, so while i'm like a 4 when it comes to sight, i feel hearing the sound in my "minds ear" makes up for it. The limit is how much of the song I remember, otherwise i can loop a part of the song as much as I like, and switch to whatever other song I want :) (And not just songs but the sound of my gf's voice for example. Not as effortless as the songs, but still possible)