Contrary to custom , he did not play the carillon or the harpsichord on formal occasions ; nor was he regularly required to produce compositions .
Sweelinck 's only duties in Amsterdam were those of an organist .
Contrary to custom , Sweelinck did not play the carillon or the harpsichord on formal occasions ; nor was Sweelinck regularly required to produce compositions .
Sweelinck 's only duties in Amsterdam were those of an organist .