In previous years, this series put together by local singer-songwriter Ryan Humbert, has included a genre-crossing range of holiday music, including big band, rock 'n' roll, bluegrass, and more. For this, the final Holiday Extravaganza, the show will return to the main stage of the Akron Civic Theater tonight at 7:30 for an “up-close-and-personal cabaret performance.” A seven-piece jazz ensemble featuring Humbert and his longtime singing partner Emily Bates on vocals will perform.