The Los Angeles Master Chorale will tackle the Everest of choral works today and tomorrow at The Walt Disney Concert Hall. Tenor Arnold Livingston Geis will be joined by Soprano Raquel González, Mezzo soprano Allyson McHardy, and Bass-baritone Rod Gilfry as the solo quartet. Performances today at 2pm and tomorrow at 7pm. "Tenor Arnold Livingston Geis says when you’re a singer in LA, you have to be up for anything. One week you could be singing Beethoven, the next week a top s