Conversation so far:
In what year did Stevie Ray Vaughan start recording?
In September 1970, Vaughan made his first studio recordings with the band Cast of Thousands.
What songs were on his first album?
They recorded two songs, "Red, White and Blue" and "I Heard a Voice Last Night".

Question: What other musicians did SRV play with on his first recordings?
Self-contained rewrite: Besides the band Cast of Thousands, what other musicians did SRV play with on his first recordings?