Wiktionary
alt. A T-shirt, often sold as a souvenir at musical concerts featuring rock groups, containing images and information about the performing artist or band, the tour the performer(s) may be on, and tour dates and venues. n. A T-shirt, often sold as a souvenir at musical concerts featuring rock groups, containing images and information about the performing artist or band, the tour the performer(s) may be on, and tour dates and venues.
Wikipedia
A concert T-shirt is a T-shirt that is associated with a concert or a concert tour, often for a rock or metal band. Bands and musical groups often promote themselves by creating and selling or giving away T-shirts at their shows, tours, and events. A concert T-shirt typically contains silk screened graphics of the name, logo, or image of a musical performer or group. One popular choice of graphics on the rear of the T-shirts is a listing of information about the band's current tour, including tour cities (sometimes specifying venues) and corresponding dates.
One of the most popular colors for concert T-shirts is a flat black. Fans often purchase or obtain these shirts to wear to future concerts.
Usage examples of "concert t-shirt".
The kid in the seat behind her and Roxy, the one with the skull tattoo on one cheek and the concert T-shirt, stood up under a moments inspiration and pelted the characters shoulder with a wadded-up mass of soggy brown paper bag.
Keyes was wearing raggedy cutoff jeans and a Rolling Stones concert T-shirt.
Yanking the door open, looming, one great grizzled grimace with a pendulous gut and size-thirteen bare feet, wearing gray sweat pants and a Megadeth concert T-shirt, Ned Hokenberry said, “.
He wore blue jeans and a Van Halen concert T-shirt, with Day-Glo lettering.
He was dressed in jeans and a loose plaid shirt over a concert T-shirt.