For the first part I chose ufo because i wanted the start to be snappy but still a little bit floaty. Also I think 3x speed suits ufo really well.
I didin't choose spider because i wanted floaty gameplay without many orbs or pads because i wanted it to stay pretty simple. If you dont use many pads spider gameplay cant be floaty because it teleports around platforms (sorry i cant write😭)I didin't choose wave because I its a very snappy gamemode but not floaty at all and I was looking for floatiness for this part
2nd Part.
I chose wave because i wanted snappy and very synced gameplay for this part. The music goes a lil diffrent (more snappy) and i wanted it to sync well.
I didin't choose ball because it just doesnt go fast enough in the air for a snappy Part. I didin't choose robot because it would be hard to sync a robot part to a fast paced music part.
3rd part
I chose swing because i wanted a really floaty part to the level and i think swingcopter is the most floaty gamemode. Also swing is kinda overhated and underrated.
I didin't choose ball because i think its more for a little snappy gameplay than very floaty.
I didin't choose ship because I don't want the part to have a high control gamemode for a floaty part.
4th part <too many emojis>
I chose robot because in the song there was a long note that could be a robot long click and i wanted a high control part instead of a floaty less controlled part.
I didin't choose swing because I didin't want a floaty part. Instead i wanted a high control part and robot suited the song better.
I didin't choose spider althought spider is very controllable for the player. I didin't choose it because i thougth that i wanted a highly controllable part where player can almost choose where you are in the screen. With spider you can only be in the floor or celing
(Yes i know i didint use basic enough gameplay but i really tried)