Conversation so far:
when did Bruce Hornsby join Grateful Dead?
from 1988.
How did he get involved?
he joined the band as a special guest and played accordion or synthesizer.
How long did he play with them?
until Jerry Garcia's death in 1995.
Who invited him to join the band?
CANNOTANSWER.
Did the fans like him?
Above all, Hornsby's musical versatility and ability to slip in and out of extended freeform jams won over longtime Grateful Dead fans.
Are there any other interesting aspects about this article?
Hornsby was the presenter when the Grateful Dead were inducted into the Rock and Roll Hall of Fame in 1994.
Was he included?
CANNOTANSWER.

Question: Did him and Jerry get along?
Self-contained rewrite: Did Bruce Hornsby and Jerry Garcia get along?