Career
He should not be confused with the German composer Johann Adolph Hasse. He lived his life in Hamburg, and received his citizenship there on 28 October 1746. The first mention of either he or his father as instrument makers was in 1758.
"Hasse in Hamburg" is described as the maker of a cembal d"amour by Adlung.
His surviving instruments include one harpsichord and a number of clavichords, rarely fretted. These are generally large and brass-strung, with a compass of C to d""" or F" to f""".
He sometimes used 4" strings (an octave higher than the usual 8") for the bass. lieutenant was large instruments such as these that many late 18th-century German composers (such as C P East Bach) had in mind when composing for the instrument, with good bebung ability and a bright tone.
