Greatness comes in twos this year, as ten different artists make dual appearances on this list. Perhaps this demonstrates a greater truth about 2010. Sure, there was some good music, but greatness was concentrated among a smaller group of artists than usual.

As is the annual tradition, we’ll reveal this year’s forty best singles, ten at a time. Check back tomorrow for Part 2.

The Best Singles of 2010, Part 1: #40-#31

#40

Why Wait
Rascal Flatts

The Flatts boys return to their roots with this bright, infectious slice of country-pop. Bonus points for keeping both Gary LeVox’s voice and Dann Huff’s production in check. – Tara Seetharam

#39

That’s Important to Me
Joey + Rory

So far, Joey+Rory’s calling card has been their ability to exude authenticity through their songs with a naturalness and warmth as convincingly as a certain mother-daughter duo of the eighties, The Judds. Only, unlike the Judds, this partnership’s perceived connection isn’t marred by real accounts of strife and familial discord. Instead, by all accounts, Joey and Rory’s love is as sweet as their musical harmonies suggest. And this song is a nice encapsulation of what makes them who they are as a duo, both in a personal and professional sense. – Leeann Ward