Translation:I forgot the title of the song, but not the song itself.
It didn't like that I said "name of the song." I'm a musician, of sorts, myself; titles are for song collections or recordings, MY babies all have names.
"Mi faris ĝin mem" = I did it myself
"Vi faris ĝin mem" = You did it yourself
"Li faris ĝin mem" = He did it himself
"Ni faris ĝin mem" = We did it ourselves
The basic meaning of "mem" is "self", not necessarily "myself".