Dietrich Buxtehude - prelude in g minor. Apparently, this was composed for the harpsichord, as the broken chords at the beginning indicate. So, why not play this more like chamber music. Turn your volume down, the original sound is fairly gentle.
Alessandro Valoriani plays Antonio de Cabezón (1510-1566): Diferencias sobre La Gallarda Milanesa. Chiesa della Santissima Annunziata, Siena. Organo di Giovanni Piffaro, 1519.