@Background Pony #48F2
Yeah, the whole Battle of the Banda is just a setup by the Dazzlings to turn humanity plus the Rainbooms against each other by tearing their friendship apart, restoring their Equestrian magic, and rule both worlds by turning all life against each other. Similar to how in Cars 2, the whole World Grand Prix was a setup by Miles Axelrod and his fellow Lemons turn the world against alternative fuel, especially when putting the lives of every racer in danger or in “The Transformers” episode, “Trans-Europe Express”, the whole Europa 2000 was a setup by Megatron and the Decepticons to get Megatron’s mitts on Auggie Cahnay’s car and Megatron would use the power of the Pearl of Bahoudin to create a worldwide disaster by becoming the master of the very elements and rule/conquer the entire universe. Think back at the TV Tropes’ page, “Not Just a Tournament”.

@621Chopsuey
Dude’s Some Dude Told Me That The Whole Battle Of The Band Was Just A Fake

@Background Pony #0064  
Do you ever heard of March Madness?

How does this chart even work?

IDK

@Puto-Chef  
Already on it. Expect a post by tonight.

Why nobody making bands names for the other bands?

Below The Snapshots band of PF, PixPiz and VB, I’d say the Diamond Dudes, not Tiara-Spoon.  
Below Lyra-Drops piano duet is probably The Jocks?

Hope we get someone that can make vectors of all of them

@Sonicblue112  

World cup be like

The Diamond Could be DT and SS or The Fashionistas.

@621Chopsuey  
That makes sense!

Actually, I think the top left one is Thunderbass’s band. It features his cutie mark, and the gems represent Mystery, Valhallen, and Cherry respectively.
 
Evidence:  

@Background Pony #BFB3  
It could be. The only other good image of the top left mark is this:  

 
Which you can see makes it a mic, a pair of drumsticks, a skull on the mic head, the three gems under that, and the three rings, along with the lightning bolt.
 
Now, completely random theory:  

 
This was where Zecora might have gone. The skull, gems, and three rings hint towards that, but that’s it.

Judging by the symbols the Diamond Dogs might actually be the band below the Snapshots (aka Photo Finish’s band): A huge diamond inside something that could be a dog collar with even more diamonds.
 
DJPON3 probably didn’t participate, since she was never affected by the Dazzling’s music.

@OneOverTwo  
Yeah. Although I think Tennis Match, Cloudy Kicks, and the athletes were excited at the prospect of competition, not actually being in a band.

@Background is Best Pony  
Maybe they’re just part of one of the unseen bands.

I noticed some girls (Tennis Match and Rose Heart in particular) that were at the exclusive band party but apparently are not represented here. Were there other band that didn’t make the cut? If so, how bad were they that Snips and Snails got in?

The Drama group looks like it was lead by Golden Hazel.

I like the nerd clique, and he derpy group too!

@Masem
 
Ah, I see. Thanks :)

@Ebalosus  
We know, for sure, the following:  
Left side, down  

@PonyPon
 
Me too. I just wish I knew who was represented by what.

I do like these emblems.