Deprecated function: Optional parameter $data declared before required parameter $qty is implicitly treated as a required parameter in include_once() (linea 1442 di includes/bootstrap.inc).
Deprecated function: Using ${var} in strings is deprecated, use {$var} instead in include_once() (linea 1442 di includes/bootstrap.inc).
Il clavicembalo ben temperato, libro I, BWV 846-869
