Every great band has classic songs, but only a handful have managed to make albums where every track earns its place. These are the records that reward listeners from beginning to end, proving that sometimes an album really is greater than the sum of its parts.

Play one of these songs at a party full of Baby Boomers and you'll barely have time to finish your drink before the dance floor is packed. But if you're standing near an exit, you might want to take a few steps to the side to make room for the wave of Millennials heading in your direction also.

People love to say albums meant more in the 60s and 70s. And maybe they did. But let’s not pretend every record flying out of stores was Rumours or Abbey Road. Sometimes one great single, a popular movie, a famous face, or an unforgettable album cover did almost all the work. By the time people discovered the rest wasn’t very good, the record company already had their money.

Long before Matthew and Gunnar Nelson became famous, the Nelson name represented an idealized version of American family life. Their grandparents, Ozzie and Harriet Nelson, starred with their sons David and Ricky on The Adventures of Ozzie and Harriet. The series became one of television’s most enduring family sitcoms and helped make the Nelsons symbols of wholesome domestic happiness.

A surprising number of legendary songs weren't sung by the band's lead singer. Some of these will make you do a double take. Others have probably been fooling you for years. So, of course, we had to rank them. Do you agree with our 20? Which songs would make your list?