There are a number of different elements that go into a great Queen song, but these are the two which Brian May thinks deliver the most.

"Upper Constant" marries his approach to the electric guitar in his metal band with the more traditional finger picking style ...

Leo Kottke described "Little Martha" as “possibly the most perfect guitar song ever written,” and ... while Betts played the lyrical electric lead. For a cool bluesy take that works well ...