Get in the spirit of Independence Day — and shake out the winter rust from your vocal pipes — at the 8thannual Great American Sing-along at the University of Colorado Boulder College of Music on June 29. This year’s theme is “In the Good Ol’ Summertime” and will feature such beloved tunes as “Camptown Races,” “Home on the Range” and “The Star-Spangled Banner.” The hour-long sing-along also features free lemonade, a free souvenir songbook and more.