"Sky Tower - Pokémon Mystery Dungeon: Blue Rescue Team" is a high quality rip of "Sky Tower" from Pokémon Mystery Dungeon: Blue Rescue Team.
The instruments are arranged in the tune of the song "Sky Tower" from Kirby's Return to Dream Land. At 0:23, they're arranged in the tune of "Azure Lake" from Sonic the Hedgehog 3 & Knuckles.
This was uploaded during the 9/11 event. It was removed along with all the other rips from that day, but it was reuploaded to the channel on April 10, 2018.