Milo, Melissa, Zack, and Mort enter a "Battle of the Bands" contest. Due to a misunderstanding, they are entered under the name Just Getting Started. As the rest of the band is setting up, Zack is astonished to learn that his old band, now named The Lumbermaxes, is also taking part in the event. Despite claiming otherwise, Zack starts to feel a sense of rivalry with his former band and then explains their history to his friends. Overcome with a desire to defeat The Lumbermaxes, Zack becomes hostile and demanding towards the members of Just Getting Started.
The contest soon takes off, with Scott and the Undergrounders and the Lumbermaxes performing initially in front of a group of judges that includes Slash. After trying to figure out how he can play all his band-mates' instruments and his own at once, Zack realizes that he's lost sight of what the group came there to do. Just Getting Started then performs and, despite a flooding parking lot and other Murphy's Law hazards, wins the contest. Max then tries to convince Zack to rejoin the Lumbermaxes, but Zack refuses. Slash tells him to just walk away.
For a full transcript of "Battle of the Bands", click here.
One of the people who got their piercings pulled out in "Worked Day" is seen with a saxophone and with piercings again.
Melissa, and again later Zack, worries Melissa's bass will go out of tune. It's something of an inside joke, as it is widely accepted basses don't go out of tune. (It could be that she thinks her strings are old and can't afford a new set.)
There are several Phineas and Ferb extras in the audience such as Pyramid Peggy (with a different hairstyle), Momo (in blue instead of purple), Jeremy's unnamed drummer, and the Debater.
While practicing, Zack utters the line "Not quite my tempo." This line was uttered by the character Terence Fletcher, an abusive band instructor in the 2014 acclaimed film Whiplash.
When Zack's explanation to Mort about his past connection to The Lumbermaxes is interrupted by the echoing "2016", Milo erroneously claims he had the "reverb" turned all the way up. The effect heard is called "delay".
When the band is rehearsing Melissa is seen motioning like she's playing even though there is no bass track heard.
She does this again on stage during the intro to "A Bumpy Ride Tonight". (The bass doesn't come in until the last few measures of the intro.)
Also, she moves her fingers considerably more than would be necessary to produce the bass track that is heard.
Who is in the audience, and where they are seated, changes from scene to scene.
When Slash is first introduced, he has a brown Les Paul (similar to his most often used in reality), but for the rest of the episode, he has a purple SG.
The last time Slash is seen, his SG has turned brown.