Friday: It's a lot cheaper than the new 63-disc boxed set from Columbia Records, and this 13th annual tribute to Johnny Cash will provide almost as good an overview of the late country music giant's 50-year career. Always a perfect merger of his rocky and twangy sides, the event dates back a couple years before Cash's 2003 death. It still features one of his very-much-surviving friends and followers, Sherwin Linton, the local vet whose tributes to the Man in Black are pure gold. Honky-tonk purists Trailer Trash also return to anchor the proceedings with their so-called Cash Choir, while grit-guitar ace Erik Koskinen and rowdy West Bank boogie kings the White Iron Band round out the bill. (9 p.m. Fri., Cabooze, 917 Cedar Av. S., Mpls., 612-338-6425, $12-$15.) The Cash show was cut down to one night this year to make way for another annual Cabooze tribute, the Janis Joplin birthday bash headed by Jill Mikelson, who starred in the Ordway's production of "Love, Janis." (9:30 p.m Sat., $12.)