Ok i think theres a few good ones out there my fav is You are the only one.

http://www.youtube.com/watch?v=9rBKbqJO2JU&list=UUqMOeGv0eaanxnmCUVmQyKw&index=4&feature=plcp


If i was going to choose a Queen demo it would be I guess were fallin out.

http://www.youtube.com/watch?v=-4R_Kmlt5Zw