while reading the lyrics in the questions the last few days, i noticed how vividly i had remembered your songs. as i read the words on the screen i instantly heard the melody and a whole bunch of the other stuff really easily. now i don't have perfect pitch, but when i went and checked the songs to see i was always exactly on pitch as well. this happens to me sometimes with other people's songs when i play them in my head (which i do all the time) but with yours it seems i have a much better chance. usually i can't tell at all if i'm playing a song in the wrong key in my head though, but reading your lyrics made it super vivid. it's not that i think they have to be in one key, but when i hear you singing it in my head it my memory is just especially vivid. i think i remember you saying you always do a range test for your songs. might this be part of it?
no, i think what's happening is you have very strong sonic memory of these recordings, probably because you've heard them a lot. i've noticed that it's pretty common for people to remember the absolute pitch of familiar recordings. in fact, it might even be more common with non-musicians, because musicians might specifically train themselves so well on the relative that they almost willfully disregard the absolute