Skating? Check. Music? Check. Driver’s license? Not so much.

– Most entertainment aims squarely for kids or adults, but Spare Parts is one specifically for teenagers. The all-day skateboarding and art event, organized by Liquid House and TS Board Shop, culminates at night with a local battle of the bands featuring Airport Scene, Broken Laces and others. Seven finalists will try to impress judges Isaac Slade (The Fray), Sloan (Single File) and Patrick Meese (Meese).

– Organizers expect about 3,500 fans to descend on Shea Stadium soccer field and Redstone Skate Park in Highlands Ranch. 2 p.m.-10 p.m. Friday, free. 1liquidhouse.com.