A jazzy diddy set to introspective chords

from Neil Patrick Harris – 2012 Tony's Recap Song on Rap Genius

Meaning

The lyric "A jazzy diddy set to introspective chords" from "2012 Tony's Recap Song" by Neil Patrick Harris has not yet been explained. To explain these lyrics, visit "2012 Tony's Recap Song" by Neil Patrick Harris , highlight the lyrics, and click 'explain'