The Shogun says to the troops: Shhh!! Ten-hut! LET'S quiet down and stand in a row with our swords! It's time for an inspection.
a line of people or things which have been lined up. その列は、何ですか? means, 'What is this line for?' (it's for tickets to see ＱUEEN；THE MUSICAL)
する or に
並 (line up / ordinary) + 列 (row)
= 並列 (する or に)
The MOUTH is loud which makes it separate
from the row of people saying SHHH!