Mark Teaches Ethan How to Play the Trumpet

Summary
As a former trumpeter for Ohio's Milford High School marching band, Mark attempts to teach Ethan how to properly play the instrument, with little to no success. Both of their instruments shared a color that's usually associated with their respective channel themes, Mark's being red and Ethan's blue.

Trivia
Lyrics= [Verse 1] There's a hundred and four days of Unus Annus left when November comes just to end it It's an annual problem for one generation, only memories left when it's ended Memento mori
 * The video's intro starts off with Nerd Fiction's animated musical parody of Phineas and Ferb's "Today Is Gonna Be a Great Day" opening. This particularly ties-in with the animated show's opening line, "There's a hundred and four days of summer vacation", as there were 104 days left till the channel's deletion.
 * Mark Teaches Ethan How to Play the Trumpet Intro Sequence.png the end of the intro, a channel called Unus Annus Archive was shown with the words "YEAH... WE SEE YOU" overlaid across the screen. This refers to Mark and Ethan issuing copyright takedowns to Unus Annus' reuploaded content without their permission. Despite this warning, Unus Annus Archive ended up reuploading the video's opening to their channel.
 * The intro's opening credits cycle between Nerd Fiction and Norbert Moses.

[Verse 2] Let's build a rocket, or make Eef [Ethan] a mummy, or virtually climb together Discovering something that doesn't exist, using pee to drink in the shower Dissecting owl bum, advice from Marky's mom, while testing our bodies for pain ''(Excerpt of Mark's mother) If you have a knife, stuck it... into your butthole'' Looking for sponsorships, taking a desert trip, and driving Amy insane (Excerpt of Amy) How dare you!

[Verse 3] So, don't upload or archive anything when we do delete it all Just stick with us cause Unus and Annus are gonna have a ball The end is ever near and inescape-a-scapable ''(Slightly edited voice line from 'Phineas and Ferb' intro) Mom! Unus and Annus are making a title sequence!''