u/AmissingGap

Watching again and in Season 3 Hereafter....Lex claims to Adam he never had the patience to learn how to play piano.

However Season 4 onwards he turns out to be a brilliant piano player, the witches bewtich him into forcibly playing and later on in S4 he plays piano again with Lucy Lane ans boasts about his skills.

Not a big deal but kinda amusing how they forgot that character moment in only 1 year