Choir sectionalism 

When a choir kid has an allegiance to their section and will literally cry for hours if they are moved.

Director: Hey Charlotte
Charlotte: wat
Director: i’m gonna need to move you to alto 1
Charlotte: no I’m a soprano 1
Director: I know but I need you to sing alto 1
Charlotte: *cries*
Director: choir sectionalism, no one ever wants to move

Choir sectionalism by Purpstar615 December 5, 2022

Sectionals 

When 2 band kids get together in bed. Usually referred to when a "trombone" is inserted into a "French horn"

Wil and Paige had 2 rounds of sectionals in bed last night

Sectionals by Cheesehead425 May 19, 2014

sectionals 

A practice session of one instrument in particular. If you add "bi-" in front of the word, it immediately becomes ambiguous, hot, and often times, hi-larious!

"Hey Matt, do you have hot bi-sectionals today?"

sectionals by $$$ February 21, 2004

Sectionals 

When two pasty lesbians do the dirty with a broccoli and a lobster

Mallori and Shayne had a round of sectionals while listening to NPR

Sectionals by Swagmastersarim July 30, 2016