What: Jazz at the Garrett-Jacobs Mansion
Where: 11 W. Mount Vernon Place
When: 2 p.m. Sunday.
Why: Because Chris Calloway Brooks and the Nu Yook City Cotton Club Ensemble are playing in one of the prettiest rooms in Baltimore. Brooks is the grandson of band leader (and onetime Baltimorean) Cab Calloway. At the concert, Brooks will talk a bit about his grandfather's work and how it changed American music.