I play a lever harp- also called a folk or Celtic harp.  Historically, Celtic harps were strung with wire or gut.  I’ve strung mine with nylon instead of sheep innards.  I get enough sheep innards just sitting near the haggis at Robbie Burns Night 🙂

People tend to associate bagpipes with Celtic music as strongly as they do the Celtic harp.  Clients planning Celtic themed events are prone to hiring both a harpist and piper, and may even want them to play together- often without advance notice of any kind.  Given the tuning and volume differences, this can be a problem.