My Missa Beati Notkeri Balbuli Sancti Galli Monachi will be performed at the beautiful Abbey of St Gall in Switzerland on the Day of Repentance and Prayer (15 September). The Abbey was the commissioner of the piece, and it is thus named after one of their most famous, the musician and poet Notker Balbulus, aka Notker the Stammerer (840-912, beatified 1512). He is known as the first ethnically German composer of music and for publishing the first collection of Sequences, mnemonic poems for remembering the series of pitches sung during a melisma in plainchant, many composed by him. The stammering little monk "was so much loved by the monks of his abbey that for a long time after his death, they could not speak of him without shedding tears."
Some selections from the Mass were performed last Summer by the SFCCO and Schola Cantorum San Francisco. Here's a bit of it.