Music

OK I know this absolutely does not sound like what you’ve shared, but my go to band for crazy buildups is Godspeed You! Black Emperor. East Hastings's buildup gets me every time.

If you like Neo-Krautrock, The Myrrors have a song Hasta LA Victoria that has a long, meditative build up that repeats, slowly layering in new effects and morphing until finally the drums properly kick in around the 6 and half minute mark (it's a 14 minute song (so on the shorter side for good Krautrock, haha!))

Apparat - Love Theme

Coheed and Cambria - Gravity's Union

Sambomaster - Sekai Wa Sore Wo Ai To Yobundaze

Magma - De Futura

https://www.youtube.com/watch?v=a3TyvyuKmP0

This might not be exactly what you're looking for, but Human Qualities by Explosions in the Sky has a pretty sudden increase in intensity near the end. It's not a slow and steady build up but you might still enjoy it.

Let's start with relatively mild moods. Of Monsters and Men have a few songs with nice buildups. Dirty Paws for instance.

Midlake's Young Bride might also be worth mentioning.

Probably unexpected, but she is definitely crazy (in the best possible way): Aurora - All Is Soft Inside

Also her direct relative (musically), Bel Canto - In Zenith

On to rock now, three songs with incredible buildups I cannot help but recommend:

Thunder Road, covered by Tortoise and Bonnie 'Prince' Billy

Dancing With The Wind - Days Of The New

Pain Of Salvation - Her Voices

Right on time is the biggest tease of a 3 minute build up to the most disappointing pay off ever.

Dance Yrself Clean - LCD Soundsystem