Billboard ranks all 23 tracks on Ms. Rachel and Mr Aron Accurso’s debut album, *I’m So Happy*, assessing them by their educational value, entertainment and musical impact. Released on 25 September, the album expands songs from the children’s series with live instrumentation, orchestration and new sections rather than simply reproducing their online versions.

– The album combines original Ms. Rachel songs with familiar nursery rhymes.
– “I Love a Rainbow” and “Caterpillar” receive notably fuller arrangements, including strings and orchestration.
– “Counting to 20!” is useful but musically straightforward.
– “Bubble Pop” and “Pop Those Bubbles” encourage movement through repetition and sing-along hooks.
– “B-I-N-G-O” makes spelling participatory, although its familiarity limits its musical distinctiveness.