Franz Xaver Murschhauser was born in the summer of 1663. In 1676 Murschhauser joined the choir and orchestra of St Peter's, where he benefited first from the tuition he received from the church's choir director Sigmund Auer and later, from 1684 to 1693, from the Court Kapellmeister Johann Kaspar Kerll, which left a lasting impression on him. In July 1690, most probably on the recommendation of his teacher Johann Kaspar Kerll, Murschhauser was asked to stand in for the choirmaster of the Munich Frauenkirche, Ludwig Hölz, who was indisposed owing to illness. After the latter's death in 1691, Murschhauser became his successor, holding the position for the remainder of his life. The Prototypon Longo-Breve Organicum (which might be translated as 'Prototypes for organ pieces, long and short') was published in two parts in Nuremberg in 1703 and 1707 and contains eight cycles/sections totalling 46 compositions, comprising varying numbers of intonations, praeambulae, fugues, canzonas, toccatas and finales designed as preludes or postludes to figural music. In 20 of the more extensive numbers, Murschhauser indicates cuts as an aid for organists in liturgical use, if needed. It is precisely these sorts of adaptations of the musical material offered by the composer himself to suit the time available in liturgical performance that make the Prototypon such a practical and relevant work, right down to our own times. The intonations are made up of figures, broken chords and passages over a pedal point, deliberately kept free of any imitative interplay. The praeambulae consist either of motivic figurations with imitative passages and pedal points somewhat reminiscent of the style of Johann Pachelbel, or they are more akin to the old Italian toccata in their alternation of chord successions and scales. By contrast, the two toccate arpeggiate, with their full-voiced chordal writing and harmonic richness, point to the Overture in the French style which, at this time, was finding it's way into southern German music primarily through the work of Johann Kaspar Ferdinand Fischer. In his edition of the Prototypon (housed in Vol. 18 of Monuments of Musical Art in Bavaria), Max Seiffert writes: 'In all these pieces, Murschhauser demonstrates a remarkable creative power and contrapuntal skill'. In this respect, the Prototypon Longo-Breve Organicum by Franz Xaver Anton Murschhauser remains an important record of musical and organ performance in the southern German Early Baroque, and one that can still offer a valuable service to the organists of today.