Mixtape: DJ Mustard and Teeflii, Fireworks (2013)

Mustard's silly, repetitive sax keyboard riff is the perfect level of nasty for a song about hitting it from the back from unproven R&B singer Teeflii. From his impressive 4th of July-released Fireworks tape, the song has a catchy insistence thanks to a lead instrument that suggests the sounds of classic Swizz Beatz gone ratchet. —David Drake