The 80/35 music festival is expanding to two full days next year and will take place Friday, July 4, and Saturday, July 5, at Western Gateway Park in downtown Des Moines. The indie and jam music festival will feature more than 40 national, regional and local bands on both paid and free stages from noon to midnight both days. Tickets for the festival will go on sale in March. Individuals interested in providing input on the event or learning more about volunteer opportunities before the festival are encouraged to attend public planning meetings the last Tuesday of every month at 6 p.m. at the Mickle Center, 1620 Pleasant St., Des Moines. The next meeting is set for Tuesday, Nov. 26, at 6 p.m.