Conversation so far:
How did Bruce Hornsby come to know The Grateful Dead?
At some shows in 1988 and 1989, Bruce Hornsby joined the band as a special guest and played accordion or synthesizer
What happened between Bruce Hornsby and the Grateful Dead?
Bruce Hornsby played more than 100 shows with the Grateful Dead from 1988 until Jerry Garcia's death in 1995
Are there any other interesting aspects about Bruce Hornsby's time in the Grateful Dead besides the shows he played?
Bruce Hornsby's own music evolved significantly during this time period
Did Bruce Hornsby play any songs with the Grateful Dead at their induction in the Hall of Fame?
Bruce Hornsby was the presenter when the Grateful Dead were inducted into the Rock and Roll Hall of Fame in 1994
Did people like it when Bruce Hornsby played with the Grateful Dead?
Yes. Since his first involvement with the Grateful Dead, Bruce Hornsby's live shows have drawn Deadheads

Question: DId he ever play any other instruments when he played with them?
Self-contained rewrite: Did Bruce Hornsby ever play any other instruments besides accordion or synthesizer when he played with the Grateful Dead?