foo-yc20 (Yamaha YC-20 organ emulator for JACK and LV2) This is an implementation of a 1969 designed Yamaha combo organ, the YC-20. Original YC-20 organs have a touch vibrato control, which is vibrato induced by horizontal movement of the keys. As there very few (almost none) midi keyboards which produce such information, this feature has been left out of the emulation. Instead of the touch vibrato control, the control panel hosts a "realism" switch. This requires jack-audio-connection-kit and slv2. By default, the package is built with -march=native, which tells gcc to use the host CPU's features such as SSE2. You can disable this by passing FORCE_SLACK_CFLAGS=yes to the script. This package uses POSIX filesystem capabilities to execute with elevated privileges (required for realtime audio processing). This may be considered a security/stability risk. Please read http://www.slackbuilds.org/caps/ for more information. To disable capabilities, pass SETCAP=no to the script.