Tower of Simplified Trial Traversing

What is Tower of Simplified Trial Traversing?
ToSTT is the tutorial tower of Under's Towers of Determination and is considered the easiest tower in game.

This tower got a very little buff on January 12, 2021 (depending on your timezone). The difficulty still remained the same after the buff though.

Music
Floor 1: Dragon Roost Island | Super Smash Bros. Ultimate

Floor 2-3: Glitter Gulch Mine - Banjo-Tooie

Floor 4-5: Pause Menu: Banjo Kazooie

Floor 6-7: Undertale Napstablook's Theme

Floor 8-9: [https://www.youtube.com/watch?v=4ltOaOKhmwY Pokémon The Origins - Battle! Wild Music]

Floor 10: [https://www.youtube.com/watch?v=JPbl6o9mGEs Pokemon Omega Ruby/Alpha Sapphire - Battle! Rival Music]

Next Tower to Beat
After beating Tower of Simplified Trial Traversing, your best bet would be to go for Tower of Forest Ascension.