Simplify the following text for a Grade 6 native English-speaking person.
Original: In 2004 , a tribute band called ( Brooklyn Qawwali Party ) ( formerly Brook 's Qawwali Party ) was formed in New York City by percussionist Brook Martinez to perform the music of Nusrat . The 13-piece group still performs mostly instrumental jazz versions of Nusrat 's qawwalis , using the instruments conventionally associated with jazz rather than those associated with qawwali .
Simplified: Nusrat 's family has been performing qawwali for the last 600 years .