My friend Dan Barrett introduced me to this extraordinary recording of Bach's Partita No. 1, and I'm sharing it with you. The pauses between movements are a bit long, but the wait is worth it.
Here's Fiorentono's obituary, and a link to all of his recordings on YouTube.
Here's one where he plays whatever comes to mind, including the beginning of the Mendelssohn Violin Concerto, "Some Day My Prince Will Come," a bit of Gershwin, and some Paganini, followed by a paraphrase.