Piano can not be heard by others

When I´m playing the Piano it sounds great to me, but my friend couldn´t hear it playing. Same in reverse, when he is playing, he can hear it, but I can´t or I just hear stuttering sounds.

Also please increase the radius to hear the Sound of Music Instruments, we have a concert place, in previous build, all the audience can hear the sound at the bleachers, but now, the top audience couldn´t hear anything.