I thought of Drummer too (boy)?
Any others you know of?
I assume you’re looking for musical occupation names?
Maybe…
[name_u]Dancer[/name_u]
[name_u]Dulcimer[/name_u] (not an occupation but an instrument ending in ‘er’)
[name_u]Rhymer[/name_u]
[name_m]Strummer[/name_m]
[name_m]Whistler[/name_m]
Similar ideas:
[name_u]Poet[/name_u]
[name_u]Archer[/name_u]
[name_u]Author[/name_u]
[name_u]Lyric[/name_u]
[name_u]Ever[/name_u]
[name_m]Harker[/name_m]
[name_m]Quiller[/name_m]
[name_u]Mariner[/name_u]
[name_u]Painter[/name_u]
[name_u]Guitar[/name_u]
Stargazer
[name_m]Forrester[/name_m]
[name_u]Miller[/name_u]
[name_u]Scout[/name_u]