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sing something out
to sing or announce something loudly. The teacher sang the names out loud and clear. she sang out "The Star-Spangled Banner" in a loud voice.
to sing louder. sing out, please. This is a very large hall. The sopranos will have to sing out more.
Call out loudly, shout, as in One of them fell in the stream and sang out for help. [Early 1800s]
1. To sing loudly and clearly: The choir sang out from the choir loft.
2. To say something loudly or in a lively manner: The announcer sang out the name of the winner. The shopkeeper sang a greeting out as we went by.