Before we ever get into last night's Glee music, it's worth repeating:

If you haven't yet watched Jane Lynch's incredible cover of "Vogue," or feel an understandable urge to do so again, stop whatever you're doing and take this four-minute break. It's well worth it.

That vido aired after "Hell-O" concluded, of course, but there were plenty of performances to appreciate during the actual episode itself, too.

For example: even if you don't trust Jesse St. James, it's hard not to appreciate his duet with Rachel, the audio of which is below:

[video url="http://www.tvfanatic.com/videos/glee-duet/" title="Glee Duet"] [/video]

Here's a look at all the singles heard on last night's episode, along with an easy, one-click way of purchasing the Glee cast version of them off iTunes:

• Glee Cast - "Hello, I Love You"
• Glee Cast - "Gives You Hell"
• Glee Cast - "Hello"
• Glee Cast - "Highway To Hell"
• Glee Cast - "Hello Goodbye"

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.