Simplify the following text for a Grade 13 native English-speaking person.
Original: Recordings exist of modern didgeridoo players playing continuously for more than 40 minutes ; Mark Atkins on Didgeridoo Concerto ( 1994 ) plays for over 50 minutes continuously .
Simplified: There are recordings of modern didgeridoo players playing wihout stopping for more than 40 minutes ; Mark Atkins on Didgeridoo Concerto ( 1994 ) plays for over 50 minutes continuously .