Here’s your chance to meet Bruno Mars backstage at his concert at Madison Square Garden in NYC on July 14.The star has donated the opportunity for you and three friends to meet him during a backstage tour. Bruno Mars is a incredibly talented singer, songwriter, producer, and musician. The 14-time Grammy Award nominee has now sold over 100 million singles worldwide, over 9 million albums worldwide, and not to mention over 1.5 billion views on YouTube.His debut album Doo-Wops & Hooligans has been certified 48x Platinum worldwide. Mars’ sophomore album, Unorthodox Jukebox, released in December 2012, has already been certified double Platinum in the US. The album features two consecutive No. 1 hit singles, “Locked Out of Heaven” and “When I Was Your Man,” in addition to his newly-released single “Treasure,” which is currently climbing the charts. Bruno Mars is currently traveling the world on a sold-out arena tour, “The Moonshine Jungle” Tour.Proceeds from this auction will benefit the Stephen Gaynor School. an independent, non-profit Lower and Middle School for bright students with learning differences. The school comprises nearly 330 students ages three to 14 with a range of learning challenges, from Attention Hyperactivity Disorder (ADHD) to speech, language, and motor delays. In a comfortable, nurturing environment and with an unparalleled level of personal attention from experienced staff, Gaynor School students break down barriers to learning, build self-esteem, and bridge the gap between their intellect and performance. Find out more here.The auction runs until April 29, and can be accessed via CharityBuzz.