Today in and around Washington:

Former U.S. Senator Bernie Sanders is at Busboys and Poets to talk about his new book, “The Speech: A Historic Filibuster on Corporate Greed and the Decline of Our Middle Class.”

Soulful newcomer Erin Barra performs at Ben’s Next Door, showing off her energetic stage presence, thoughtful lyrics and undeniable star quality.

Talib Kweli and Jean Grae rhyme circles around one another (figuratively) at the Black Cat. That’s quite a one-two punch for a Tuesday.

• If you absolutely cannot wait for Cinco de Mayo, Ceiba has $5 margaritas and Mexican street food favorites, like tacos al pastor, from 3 p.m. onward.

•Today’s food truck forecast: low-to-mid 70s. Here’s where to eat lunch: