With his “Back To Bass” tour supporting his box set, Sting: 25 Years, commemorating his quarter-century as a solo artist, Sting launches the adventure with two nights at Boston’s Wang Theatre Oct. 21-22. Featuring a stripped-down, back-to-basics band, the North America run wraps with two nights in Vancouver, British Columbia, at the Queen Elizabeth Theatre Dec. 8-9.

Although the tour was first announced earlier this month, the mighty Sting machine keeps adding dates. Las Vegas joined the routing this week with the addition of a Nov. 25 gig at the Colosseum at Caesars Palace while Reno nabbed Mr. Sumner for Nov. 26 at the Events Center.

Sting also added additional nights for Houston’s Verizon Wireless Theater (Nov. 18); San Francisco’s Nob Hill Masonic Center (Dec. 3) and Seattle’s Paramount Theatre (Dec. 6).

Fan club pre-sales for Las Vegas and Reno began Sept. 27 and the general onsale launches Sept. 30 at 10 a.m. local time for Reno and Oct. 3 at 10 a.m. local time for Las Vegas.

Fan club pre-sales for Houston, San Francisco and Seattle begin today and general onsales launch Oct. 3 at 10 a.m. local time. Check out Sting.com for more information.