There is at least, two artist/bands called Chapter 13:
1) a rap duo (rashid hadee & young valentine)
2) a synth pop band previously known as The Marble Index.
Ignoring the gimmicky formulas of commercial rap, and stale “keep it real” clichés of the underground environment, Chapter 13 brings some thing fresh to the table. Rashid Hadee and Young Valentine combine soul piercing wit, hard edge confidence and innovative beat production, which reminds listeners of the “Golden Era” of Hip-Hop.