The interval of a perfect fourth is heard in the first two notes of the wedding march from Wagner's Lohengrin, otherwise known as Here Comes the Bride. The interval between the note for "here" and the note for "comes" is a perfect fourth. You can also hear a perfect fourth by playing a C and an F.The interval of a perfect fifth is found in Twinkle, Twinkle, Little Star. The interval from the first "twinkle" to the second "twinkle" is a perfect fifth. You can also hear a perfect fifth by playing a C and a G.
The interval of a major sixth is found in My Bonnie Lies Over the Ocean. The interval between "my" and the first sylable of "bonnie" is a major sixth. You can also hear a major sixth by playing a C to an A.
The common names of the other intervals are: