Hi Audrey, Busking sounds like it could be a lot of fun, and a good way to gain experience playing out. Taking the Paris subway was always fun as there were always muscians busking. Wow, the sound really carries down in the tunnels. Once there was even a harpist, opera singer, violinist, oboeist(?sp). For me playing, I have 45 min. playing and 15 off. I’ve never had to play longer than 2hrs. though.