Get your notebooks ready: Del the Funky Homosapien is substitute teacher for the day. The East Bay MC might have canceled his Napa show back in April, but he makes up for it with a free show this week. Free tickets are available at the Uptown Theatre box office, as are $25 tickets for “Funk in the Electronic Age,” a preconcert workshop and discussion on the state of music today and how Del creates, composes and perceives music. As for the show, Del has recently reunited with Dan the Automator and Kid Koala for his Deltron 3030 project. Expect songs like “Virus” and “Positive Contact” when he plays on Friday, July 5, at Uptown Theatre. 1350 Third St., Napa. Free. 8pm. 707.259.0123.