Simplify the following text for a Grade 12 native English-speaking person.
Original: Subsequently artists including Kanye West , Nine Inch Nails , Kylie Minogue and Ayumi Hamasaki have released music and promotional material on USB flash drives .
Simplified: Subsequently , artists including Kanye West , Nine Inch Nails and Ayumi Hamasaki have released music and promotional material on USB flash drives .