While this Harmoniemusik probably began as indoor concert music, in time this delightful, gay offering soon found its way to the outdoors. Bethlehem's residents gathered for concerts in the evening outside the Single Brethren's House while in nearby Nazareth the Black Rock Spring, a favorite picnic area, provided the logical setting. One of the more auspicious occasions centered on the annual observance of Whitmonday in Bethlehem. A festive mood prevailed as the townsfolk gathered for strolls along the banks of the Lehigh River. In 1808, to add to the occasion, a barge floated down the river with an ensemble of clarinets, horns, and bassoons assembled on the barge to play a variety of marches, minuets, and similar selections appropriate for the occasion. David Moritz, in addition to performing with the group, also supplied most of the music for this event. Of special interest were his "water music" suites: Bey einer Quelle zu Blasen ("To be played by a spring", 1808) and Bestimmt zu einer Wasserfahrt auf der Lecha ("Intended for a boat excursion on the Lehigh", 1809). The first of these is essentially a "suite of suites" containing three short four-movement suites, while the second is a work of fifteen movements. Moritz's work straddles the Classical and Romantic periods, so in addition to graceful melodies, these works also contain moments of programmatic impressions, as might be expected on an excursion down a picturesque river