Los Angeles: Singer Katy Perry says that she often approaches fans in disguise and hands them concert tickets while on tour. The singer wants her fans to know that just because a show is sold out, doesn't mean there aren't any tickets left, reports contactmusic.com. ‘Sometimes, when we go bike riding the day before or the morning of a show, we take some tickets and stop along the way in coffee shops and places, and give them away secretly,’ she said. ians