How Flow Evolved

Rap's rhythmic delivery — its flow — has changed dramatically over the decades:

• Old school (1970s–80s) — simple, on-beat delivery with end rhymes. Grandmaster Flash, Run-DMC
• Golden age (late 1980s–90s) — Rakim rhymed mid-line and varied his rhythm; Nas, Wu-Tang Clan, and Tupac pushed lyrical complexity
• Double time (2000s) — Eminem and Twista rapped at machine-gun speed while staying clear
• Mumble rap (2010s) — Future and Young Thug used voice as an instrument over lyrics
• Polyrhythmic flow (current) — Kendrick Lamar and JID layer multiple rhythms in one verse