Tatiana's big "The Reason You Suck" Speech to Mayday, after the latter refuses to accept that Bunk Bed Junction didn't make the audition. It's imposing, it's hammy and the visuals somehow manage to be laughably over the top and intimidating at the same time.
Tatiana: Okay listen, honey. You think you can just walk in here and drag us all into your silly fantasy? You are so naive to think that Rock is still relevant. Stop living in the Past! There is only one music in demand right now, and that is... E-D-M! The age of Rock is over! EDM rules this city!
Though Mayday's response is equally awesome:
Mayday: Oh yeah?! Well how about you, take all those X-ses, and shove 'em up your-!
DJ Subatomic Supernova might be an overly self-important Jerkass, but his Awesome Ego is a joy to behold. Especially his Badass Boast to Bunk Bed Junction before the battle starts.
Mayday: So you think your music is so relevant Iah issit?!
DJ Subatomic Supernova: Don't you know who I am? I am DJ Subatomic Supernova! My music will reach the furthest corner of the galaxy. What have you done today? Simpletons!
Yinu's Establishing Character Moment after she admonishes Bunk Bed Junction for crashing her concert. She starts playing what at first seems to be a fairly generic "Pachelbel's Canon" Progression, with Mayday commenting that she's heard that one at least a dozen times - before getting really serious and following up with a complex, powerful melody that leaves both Maday and Zuke stunned.
Zuke: I think we just got schooled by a kid.
After Bunk Bed Junction’s attempt to ruin her concert and Yinu’s mother taking over trying to stop them, Yinu had enough and ends up playing a melody that would leave other pianists gobsmacked. If you look at the Rock vs. EDM graph, it is going crazy most likely due to her no longer being EDM nor Rock, but a pure, intense classical masterpiece.
Yinu: I hate you all. I hate you all! I so hate you all! (Shrieks as she begins playing her piano in a frenzy) Zuke:Woah, Triplets!She’s going all out!* Musicians have pointed out that this Child Prodigy isn’t just playing triplets, but syncopation, accentuation, crescendos, and diminuendos, to name a few! These are not easy!
When Zuke and Mayday try to get back together, Eve starts spouting emotional and verbal abuse towards Zuke. She tries to belittle him, demean him. But that doesn't stop the duo; they keep going down their respective tunnels, until they finally break through the barrier and reunite against all odds! And the cherry on top? Mayday's line right here:
In a more subdued way, Zuke breaking things off properly with Eve after the fight is over so that she can finally move on, showing how much he has matured since his college days, where he just ran away from her rather than confront the issues with their relationship.
Mayday, of all people, coming to the conclusion that they can't let NSR's own satellite destroy it's headquarters. Why not? Because they're simply repeating history (if to a deadlier degree) by imposing their Rock & Roll and beating down anyone who doesn't share their taste in music. She sees that if they continue down the path they've chosen, then Bunk Bed Junction will become the new NSR. That's pretty deep, especially coming from a video game that has virtual mermaids, giant monster stage moms and robot boy bands.
It's not just that. When Mayday realizes that she has become "the new NSR", that gives her the idea of collaborating with NSR to stop the satellite. She then puts all her hatred of EDM aside and immediately turns to Tatiana for help.
When Kliff just won't stop shouting abuse at Bunk Bed Junction when they turn their backs on him and leave to save Vinyl City, Tatiana finally has enough of his crap, lowers the platform back down, walks over to him and uppercuts him. Doubles as a funny moment given she prioritized lowering the elevator, walking up to him and punching him to shut him up, and then going back up as if nothing happened.
Even before that, there's the part where Tatiana reacts to Kliff's sobstory about his "loyalty" by saying "Listen here, Kliff: I don't give a damn about you, understand? I! Owe! You! Nothing!" It sends a pretty powerful message, that no fan (however 'devoted' they are) is obligated to their favorite artist's time or attention.
On the way to power up the Grand Quasa, Kliff tries to stop Bunk Bed Junction with a gigantic army of robots. The one who ends up clearing the way is Tatiana, who shows up with her old guitar and wipes out the army with one power-chord.
Showstoppers are always cool. It's basically Mayday and Zuke teaming up to deliver a deadly solo that blows their opponents to kingdom come, all while yelling their signature Catchphrase.
Know what's more awesome than a Showstopper? A Showstopper performed by Bunk Bed Junction and every single boss together to repel a falling satellite!
And did we mention yet how they repel said satellite? Well, first the NSR building shakes like a metronome faster and faster. Next the surrounding buildings converge forming into a giant hand. The hand makes the "rock and roll!" hand sign, and then flicks the satellite just as it's about to hit, causing it to harmlessly explode like a firework into confetti!
Both Mayday and Tatiana publicly acknowledging how this whole mess is both their faults and resolving to set things right. The ending cutscene shows they did.
When Tatiana offers Mayday and Zuke a new spot in the reformed NSR, Mayday finds the courage to turn down the offer. All that fame could've been hers and Zuke's, but she recognizes that's not what she truly wants. Instead, she shows the maturity to realize that somewhere along the way, they lost sight of why they play Rock music in the first place. Tatiana responds by tossing Mayday her old guitar and giving her a pep talk to continue making the kind of music she and Zuke enjoy.
