Editor’s note: Calendar submissions must be received by noon Wednesday for publication the following week. Send information to calendar@ccnewspapers.com, attn: Lone Tree Voice. No attachments. Listings are free and run on a space-available basis.

Lone Tree

Sept. 25

Open House at the Lone Tree Police Department from 11 a.m. to 4 p.m. Sept. 25. Visit www.cityoflonetree.com.

Oct. 8

The Lone Tree Symphony Orchestra’s A Walk on the Dark Side concert is at 7:30 a.m. Oct. 8 at the Cornerstone Baptist Church in Lone Tree. A donation of $5 for admission is sincerely appreciated. We recommend arriving early, as seating often fills up quickly. Visit www.lonetreesymphony.org.

Oct. 18

Colorado Ballot 2010. The fall 2010 Colorado ballot promises to stir up strong emotions in the state. With a variety of complex issues coming to a vote, it is important that we understand the ballot and what is at stake. Join Active Minds from 7-8 p.m. Oct. 18 at the Lone Tree Library, 8827 Lone Tree Parkway, for an objective review of the ballot issues and a presentation of the arguments on each side of the proposals. RSVP: 303-791-READ.

Nov. 14

Guitarist Performs. Award-winning classical guitarist Peter Fletcher performs a diverse program of music from four centuries at 2 p.m. Nov. 14 at Lone Tree Recreation Center, 10249 Ridgegate Circle, Lone Tree. Free and open to the public.