The Butler Area Public Library will host RetroFest from 6 to 8 p.m. on Wednesday in the library’s courtyard, 218 N. McKean St.

Pat Gallagher will play music, and food will be provided by Third Eye Pies of Butler.

Trivia and a “dress as your favorite decade” costume contest also will take place during the event.

Registration is not required for the event, which is the last of the library’s "Summer in the City" concert series.

For more information, call 724-287-1715.