In January 2012, May featured on N-Dubz frontman Dappy’s solo single “Rockstar”,providing “rumbling guitar riffs which culminate in an electrifying solo”.[50] The pair also collaborated on a performance of “We Will Rock You” for BBC Radio One’s Live Lounge.On 12 August 2012, Queen performed at the closing ceremony of the 2012 Summer Olympics in London.May performed part of the “Brighton Rock” solo before being joined by Taylor and solo artist Jessie J for a performance of “We Will Rock You”.On 16 September 2012, May appeared at the Sunflower Jam charity concert at the Royal Albert Hall, performing alongside bassist John Paul Jones (of Led Zeppelin), drummer Ian Paice (of Deep Purple), and vocalists Bruce Dickinson (of Iron Maiden) and Alice Cooper.On 20 September 2013, Queen + Lambert performed at the iHeartRadio Music Festival at the MGM Grand Hotel & Casino in Las Vegas.