Tiny room, big legacy: a Mass Ave fixture for nightly jazz and stiff drinks. Thrillist and TripSavvy praise its dive-bar charm, while public radio WFYI has chronicled its cultural role and long-time ownership. Cash cover some nights. ([thrillist.com](https://www.thrillist.com/venues/drink/indianapolis/bars/chatterbox-jazz-club?utm_source=openai), [tripsavvy.com](https://www.tripsavvy.com/best-nightlife-in-indianapolis-4776530?utm_source=openai), [wfyi.org](https://www.wfyi.org/programs/cultural-manifesto/radio/the-chatterbox?utm_source=openai))