Singing a duet

In media we were give the task of practicing lip syncing. For the task we had to film a duet of two people singing on camera. We had to lip sing to the"Don't go breaking my heart". We were told to sing out loud with the song playing, singing along with the song would help when syncing up the song with the music when editing it. we took one two long indiviual shots of us singing the song all the way through, and we took one long shot of us singing together.