Simplify the following text for a Grade 5 native English-speaking person.
Original: It was first played on the guitar , just before Dominic Scott left the band , and recorded as a demo the same year with a Yamaha CP70 instead of the guitar .
Simplified: The song was first played on the guitar , just before Dominic Scott left the band . It was recorded as a demo the same year with piano instead of the guitar .