Phoebe Seman, Katie Greenberg, Christina Burt and Anna Kanter.

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Evanston Township High School’s choral group, The Treble Makers, made a special appearance at the Goodman Theatre on Nov. 20. The quartet warmed up the audience with an a cappella performance 6:30-7:15pm, prior to the 7:30 p.m. show of “A Christmas Carol.”