Pallbearers of the first string ready

from Why? – Strawberries Lyrics on Rap Genius

Meaning

First-string is a reference to the starting line-up of a team, the best and most talented players going first into the game.

Pall bearers are the group of people who carry the coffin from the funeral to the hearse and/or grave. The use of “first string” implies that the journey to the grave is a long one, requiring much help and effort or, conversely, that it is a game.

Another iterpretation: he may have been rude to hotel staff for whatever reason, he and the rest of the pallbearers wait around after the funeral but before the wake, silently gathered in “the second floor hallway.”

Also in this song I think ‘first string’ is used in the context of an orchestra, first strings being the ‘First Chair’ in each of their instruments representations.
They’re waiting to play at the wake or something and Yoni’s sadly reflecting on a happier time, eating strawberries on the deceased’s birthday.

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