Complex sentence: In November 2013 banjo player Gerry O'Connor joined Joe Bonamassa on his United States Tour, so Paul Kelly stood in for him on The Dublin Legends' concerts in Germany.
Split into simpler sentences: In November 2013 banjo player Gerry O'Connor joined Joe Bonamassa on his United States Tour. Irish musician Paul Kelly stood in for O'Connor on The Dublin Legends' concerts in Germany.