きらきら星
The chord progression repeats every 8 beats, so one might think of the song as being in either 2/ time or 8/ time (whichever denominator is used for reference time, i.e. 2/4 or 8/4 time if the beat is a quarter note, etc.). The pattern of 2/ and 8/ is similar to the beat pattern in "Twinkle Twinkle Little Star", but phase-shifted by 180 degrees (since the song starts on a weak beat rather than the strong beat beginning of "Twinkle Twinkle").