It’s usually when he’s out travelling that H.P. Baxxter, the frontman for the techno-band Scooter, gets his ideas for a new song. “The lyrics actually evolve kind of coincidentally – when you’re either on holiday or maybe out on the town for an evening,” the 60-year-old singer tells dpa. One of his ideas occurred while he was on a ferry from Scotland to Amsterdam. In a room next door where there was some lively gambling going on, the host repeatedly shouted “I keep hearing Bingo.” “I immediately wrote that down,” he says, and just like that, it was a line for his next song. Now “I Keep Hearing…