When you're singing a song in chorus and your teacher stops just before the most exciting part of the song.
Or, when your favorite song comes on the radio and the radio either a) cuts out, b) is turned off, or c) it's a song montage.
Mr. A. stopped the chorus to fix the bass note just as were getting to the best part of our song, effectively song-blocking us.
My favorite song was just on, but the radio cut into static and song-blocked me!
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