||Concert variations on the choral 'Nuremburg'
||1 movement in 6 sections - Intrada, Tema, 3 variations and Finale
||1876 or earlier
probably not too much earlier though, as Thayer's first three organ sonatas - opp. 1 to 3 - seem to have been first published, by Bote & Bock, only just back in 1866.