The plural is a regular S plural, instruments.
The plural is bridges.
The plural of address is addresses.
The plural of "turkey" is "turkeys."
The plural of cylinder is cylinders.
The plural form of him, her, or it is them. (objective pronouns)
Actually, the plural of cello is simply cellos.
The English spelling is maracas (plural noun) because the rattle-like instruments are traditionally played in pairs.
The plural way to spell studio is studios.
The plural is resources.
The plural is cantaloupes.
The plural is hooves.
The plural is cherries.
The plural is roses.
The plural is "emeralds."
instruments
The plural is bridges.
The plural is "recesses".