Not looking forward to eighty, nothing good seems to happen after that, any way i have about 5 songs i can play without music, but i have over 300 sound tracks with
sheet music to choose from, when i play at a party or show i usually play about 25 songs and i like to mix it up for each occasion so trying to learn that many songs
would be tough. Back in the early sixties when i played in rock bands we never used sheet music, simply bought a 45 record that we wanted to play and learned the songs by ear. there was one song we always played “Wild Weekend” very popular song in 1963 I can still play the whole song today nover forgot it. Fun times.