int (*remove_sample)(void *private_data, simple_instrument_t *instr,
int atomic);
void (*notify)(void *private_data, snd_seq_kinstr_t *instr, int what);
int (*remove_sample)(void *private_data, simple_instrument_t *instr,
int atomic);
void (*notify)(void *private_data, snd_seq_kinstr_t *instr, int what);