Lips

This achievement is incredibly straight forward to unlock. Boot up your copy of either https://www.trueachievements.com/Lips-xbox-360.htm, Number One Hits, Party Classics or I Love The 80's. Once you've booted the game up and the game has finished connecting to the servers just scroll through the menu and press "A" on the page called; My Lips. Once you do that the achievement will unlock.

This can be seen in the below video.

* ^{Credit to 360GuidesAU for the video}

Similar to the Been to Get Music achievement. On the main menu go to the My Lips section. This achievement unlocks as soon as you get the "My Lips" page