Red Rocks is slowly starting to fill in for the summer. A surprise hit last summer was John Prine and Emmylou Harris in a very well- attended show. This time it's Prine and Levon Helm, with a June 13 date set - nice night on the Rocks. Tickets go on sale at 10 a.m. today, $50 to $59 (Ticketmaster).

Also on sale:

* FILLMORE AUDITORIUM - Thievery Corporation plays April 16, with tickets on sale at 10 a.m. Saturday, $39.50. Jack's Mannequin brings the Farther From Earth World Tour there April 7, $25; and The Decemberists return on May 26, $25 (LiveNation.com).

* OGDEN THEATRE - Outformation and Tea Leaf Green play March 21, with tickets on sale at 10 a.m. today, $15.50 (Ticketmaster).

* PARAMOUNT THEATRE - Comedian Joel McHale is set for April 4, with tickets on sale at 10 a.m. Saturday, $34.50 and $39.50 (TicketHorse).

RUMORS AND HEARSAY: Ticketmaster shows a Tribute to John Denver June 27 at Red Rocks, as well as an Abba tribute July 23 and 1964 on Aug. 22 . . . The Gin Blossoms are set for two nights there, Sept. 16 and 17, not sure who they're opening for . . . The Taste of Chaos tour, formerly set at the Fillmore, has been downsized to the Gothic Theatre . . . The Blink-182 reunion tour is in the works . . . Keith Urban and Sugarland are at the Pepsi Center on July 15.

Mark Brown