Trebel, a music app, is being introduced to Queens College. It allows the user to listen, download and play music offline, with no data charges, for free. According to the Nielsen Company, a global information company, 66 million millennials listen to 44 hours of music per month each and 73 percent of listening happens outside. QC was picked to access the app before the general population because the campus is a hub for activity. Trebel is currently at 3,000 colleges and universities and 25,000 high schools across the country. “Trebel has changed the way I listen to music. Free music doesn’t hurt either,” freshman Lauren Pianko said. Trebel’s musical database…