Meloetta farting was causing the Smashers fighting on the Spiral Mountain to stop, and it was also causing Hatsune Miku to have her interest; with her being there as a distraction additionally.
"Ooh; your toots sound so musically!" Miku Hatsune proclaimed while clapping her hands together. "You think you can show me how to have my flatulence change in tune?"
"I can show you and how!" Meloetta chimed for she used her magical Pokemon powers to suddenly make Hatsune fart, with Miku squealing upon noticing the different pitches her air biscuits were going.
"I knew this would happen." Kazooie squawked in disappointment while flapping her wings after being used to slam down on the various Smashers that got sent blasting up in the sky.
"Maybe if we're lucky we don't be in this story for much longer." Banjo murmured with a concerned tone in his voice.
Suddenly the bear and bird found themselves blasted from their home due to a combined explosive shart between the farty Meloetta and gassy Miku, with the grassy meadows changing color from the bright green and yellow to poop stain brown as a result of the musical methane present within the now stinky sky.