sing out

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See: proclaim
References in periodicals archive ?
Sing Out Corporation has sold more than 100,000 copies of a unique group-singing songbook, "Rise Up Singing," without any organized advertising or publicity.
Sing Out, a not-for-profit corporation, is the seminal supporter of folk and multicultural music as living phenomena.
To obtain a free copy of the Sing Out catalog and the guide "Amazing Tips To Create A Great Sing-Along," send a self-addressed stamped envelope to Sing Out Corporation, P.