Simplify the following text for a Grade 7 native English-speaking person.
Original: On July 30 , 2010 deadmau5 collapsed on stage 50 minutes into his set and doctors said he was suffering from exhaustion and vomiting .
Simplified: On 30 July 2010 at the 9:30 Club in Washington , D.C. , deadmau5 collapsed on stage , suffering from exhaustion and vomiting .