We looked yesterday for a lot of this, and they're very hard to find. Most of them have been removed. Prince liked to control his performances and the ability to view them.
I think Prince was strange, but brilliant and a great guitarist. We saw him when he came out for his hall of fame ceremony, and he blew me away with his guitar playing. (I always thought he was too pop for me, but I immediately bought his greatest hits after seeing that.) And supposedly he could play 20+ instruments.