I heard Sonny Rollins live in concert two times. Both were incredibly inspiring. The last time I saw him was when he played at the Amsterdam Concertgebouw. The hall was sold out. Rollins played with such an indescribable energy. He always went forward, straight into the music, the groove, the flow.
If you’re one of those folks who are into jazz and mountain activities, I strongly advise you to take the opportunity to at least once in your life visit the Montreux Jazz Festival, typically taking place end June / early July.