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Aside from being a fun, cute song, this is a great way to encounter a lot of onomatopoeia all at once.
Prepare to have this song stuck in your head for days. If you're trying to learn Japanese onomatopoeia, then that's a good thing.
This video, made as part of a music competition at Comiket, uses the vocaloid character Kizuna Akari to create a genuinely catchy musical mashup of short Japanese phrases, most of which are onomatopoeia.
Aside from being a fun, cute song, this is a great way to encounter a lot of onomatopoeia all at once, so you can try to recall the ones you know and take note of the ones you don't (and then add them to your SRS).