Upper school music teacher Susan Nace, who also directs Cantilena and advises Guys’ Gig, will be on the edge of her seat come Grammy Award night January 31 – and for good reason. Last month, she and the rest of the San Francisco Symphony Chorus were nominated for the Best Choral Performance award for their live recording of “Symphony of a Thousand,” part of Gustav Mahler’s Symphony No. 8 in E flat Major. Produced under the direction of San Francisco Symphony conductor Michael Tilson Thomas and choral director Ragnar Bohlin, the recording was made during live performances in Davies Symphony Hall in November 2008. The recording has also been nominated for Best Classical Album and Best Engineered Classical Album awards. A short video with behind the scenes footage and insights from the recording can be viewed at “A Universe of Sound: Recording Mahler’s Symphony No. 8.”