Stainless Steel Dulcimer Strings. For the 4 String version (I like having the Doubled Melody strings because it does have a special sound) I just needed to get another 12. These can be used on a Regular Dulcimer too. Ball End versions would be cool because most Banjo Tailpieces made today are Terminator Tailpieces. The Lap-Jo can use any Loop End Dulcimer strings, I'd just need a Terminator Tailpiece so I can use Ball End versions too.