January 9. Not to be a bummer, but the recent losses of Jack Bruce, Bobby Keys, and Ian MacLagan add up to a sobering reminder: Catch those classic rockers while you still can, people. One of them is Traffic founder and Rock and Roll Hall of Fame member Dave Mason, 68, who here makes his way to Infinity Music Hall. (To inject some optimism: At the same venue last month we caught Ian Hunter, still kicking ass at age 75.) The singer-guitarist and author of hits like "Feelin' Alright" and "Hole in My Shoe" lays out his calling card with the name of his current band: Dave Mason's Traffic Jam. (The Cherry Poppin' Daddies swing by January 11; Jeff Daniels appears with the Ben Daniels Band January 15.) 8pm. $60-$80 ($125 meet-and-greet with Mason). Norfolk, Connecticut. (866) 666-6306; Infinityhall.com.