who wrote one day at a time theme song
One Day at a Time The theme song for One Day at a Time, "This is It", was composed by Brill Building songwriter Jeff Barry and his wife Nancy Barry, and performed by recording artist Polly Cutter. The opening credits were originally seen over a filmed sequence showing Ann, Julie, and Barbara excitedly moving into their new home. Later, the opening credits sequence mostly consisted of clips of each cast member taken from previous episodes.