Aquila banjo ukulele strings, unless it has the clear mylar head, then perhaps something mellower. It pretty much looks the same as my Rally. I had a calfskin head put on, but also considered the Remo Renaissance head. I have the Aquila strings and like the sound. Many players have tried and love different strings. If I didn't want to use Aquila, I'd have tried Fremont Blackline. Not sure I've heard from anyone who's tried them though.