diff --git a/audio/calf-ladspa/README b/audio/calf-ladspa/README
new file mode 100644
index 0000000000..8ffe92ee3b
--- /dev/null
+++ b/audio/calf-ladspa/README
@@ -0,0 +1,17 @@
+Calf "legacy" audio plugin pack for LADSPA and JACK. Contains effects
+(flanger, reverb, tape-like delay, phaser, rotary speaker, multi-mode
+filter, multi-tap chorus and compressor) and instruments (organ simulator
+and a monophonic synthesizer). This is the last release of Calf that
+supports LADSPA.
+
+This build only contains LADSPA plugins. It can be installed on the same
+system as the main "calf" build without conflict. If you're looking for
+LV2 plugins and/or the standalone calfjackhost, see the main "calf" build.
+The main purpose for calf-ladspa is to allow old Ardour/etc sessions
+to keep working after upgrading calf to the new non-LADSPA version. New
+projects should use the LV2 plugins in the calf build, since that's what
+upstream supports.
+
+If you're looking for DSSI, please contact the script maintainer. Adding
+DSSI to this build is possible, but more work than I want to do unless
+someone actually *needs* it for opening old sessions.
diff --git a/audio/calf-ladspa/calf-ladspa.SlackBuild b/audio/calf-ladspa/calf-ladspa.SlackBuild
new file mode 100644
index 0000000000..bd3e0d7647
--- /dev/null
+++ b/audio/calf-ladspa/calf-ladspa.SlackBuild
@@ -0,0 +1,132 @@
+#!/bin/sh
+
+# Slackware build script for calf-ladspa
+
+# Written by B. Watson (yalhcru@gmail.com)
+
+# 20151105 bkw:
+# - Renamed to calf-ladspa. The main calf build is now for calf-0.0.60,
+#   which lacks LADSPA support. Removed LV2 and standalone support, use
+#   calf for that instead. Removed DSSI support, because I don't
+#   think anyone's using it, and because it's non-trivial to install
+#   the gui support files anywhere other than /usr/share/calf, which
+#   would step on the main calf package.
+
+# 20141030 bkw:
+# Finally getting around to submitting this, there have been no code
+# changes upstream since 20140308.
+
+# 20140308 bkw:
+# - Switched to falkTX's KXStudio fork of CALF. falkTX doesn't do release
+#   tarballs, so this is a git checkout from 20140308.
+# - Added capability stuff.
+
+PRGNAM=calf-ladspa
+VERSION=${VERSION:-0.0.19kx}
+BUILD=${BUILD:-1}
+TAG=${TAG:-_SBo}
+
+if [ -z "$ARCH" ]; then
+  case "$( uname -m )" in
+    i?86) ARCH=i486 ;;
+    arm*) ARCH=arm ;;
+       *) ARCH=$( uname -m ) ;;
+  esac
+fi
+
+CWD=$(pwd)
+TMP=${TMP:-/tmp/SBo}
+PKG=$TMP/package-$PRGNAM
+OUTPUT=${OUTPUT:-/tmp}
+
+if [ "$ARCH" = "i486" ]; then
+  SLKCFLAGS="-O2 -march=i486 -mtune=i686"
+  LIBDIRSUFFIX=""
+elif [ "$ARCH" = "i686" ]; then
+  SLKCFLAGS="-O2 -march=i686 -mtune=i686"
+  LIBDIRSUFFIX=""
+elif [ "$ARCH" = "x86_64" ]; then
+  SLKCFLAGS="-O2 -fPIC"
+  LIBDIRSUFFIX="64"
+else
+  SLKCFLAGS="-O2"
+  LIBDIRSUFFIX=""
+fi
+
+# 20151106 bkw: --enable-experimental only enables the fluidsynth
+# module, which doesn't work as LADSPA (needs to be DSSI or LV2), so
+# leave it disabled here.
+EXPOPT=disable
+
+# Unfortunately there's no way to disable building calfjackhost and
+# installing it and its support files. We'll disable what we can,
+# and go ahead & build calfjackhost and rm -rf it after install.
+LADSPA_OPT="--with-ladspa-dir=/usr/lib${LIBDIRSUFFIX}/ladspa"
+DSSI_OPT="--without-dssi"
+LV2_OPT="--without-lv2"
+
+set -e
+
+SRCNAM=calf
+
+rm -rf $PKG
+mkdir -p $TMP $PKG $OUTPUT
+cd $TMP
+rm -rf $SRCNAM-$VERSION
+tar xvf $CWD/$SRCNAM-$VERSION.tar.gz
+cd $SRCNAM-$VERSION
+chown -R root:root .
+find -L . \
+ \( -perm 777 -o -perm 775 -o -perm 750 -o -perm 711 -o -perm 555 \
+  -o -perm 511 \) -exec chmod 755 {} \; -o \
+ \( -perm 666 -o -perm 664 -o -perm 640 -o -perm 600 -o -perm 444 \
+  -o -perm 440 -o -perm 400 \) -exec chmod 644 {} \;
+
+autoreconf -if
+
+# Note: The build ignores the provided -O2 in the flags (but the
+# -march/-mtune -fPIC stuff is used). If you really want to force
+# it to use -O2 (Slackware default), set FORCE_SLACK_CFLAGS=yes
+# in the environment.
+if [ "${FORCE_SLACK_CFLAGS:-no}" = "yes" ]; then
+  sed -i -e 's/ -O3[^"]*//' configure
+fi
+
+CFLAGS="$SLKCFLAGS" \
+CXXFLAGS="$SLKCFLAGS" \
+./configure \
+  --${EXPOPT}-experimental \
+  --prefix=/usr \
+  --libdir=/usr/lib${LIBDIRSUFFIX} \
+  --sysconfdir=/etc \
+  --localstatedir=/var \
+  --mandir=/usr/man \
+  --docdir=/usr/doc/$PRGNAM-$VERSION \
+  --htmldir=/usr/doc/$PRGNAM-$VERSION \
+  --enable-shared \
+  --disable-static \
+  $LADSPA_OPT \
+  $DSSI_OPT \
+  $LV2_OPT \
+  --build=$ARCH-slackware-linux
+
+make
+make install DESTDIR=$PKG docdir=/usr/doc/$PRGNAM-$VERSION
+
+# install-strip is supported, but doesn't work:
+find $PKG -print0 | xargs -0 file | grep -e "executable" -e "shared object" | grep ELF \
+  | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null || true
+
+# This build is only for the ladspa plugins, so none of this
+# other stuff should be in the package:
+rm -rf $PKG/usr/share $PKG/usr/bin $PKG/usr/man $PKG/usr/lib64/calf
+
+mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
+cp -a AUTHORS COPYING* ChangeLog README TODO $PKG/usr/doc/$PRGNAM-$VERSION
+cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild
+
+mkdir -p $PKG/install
+cat $CWD/slack-desc > $PKG/install/slack-desc
+
+cd $PKG
+/sbin/makepkg -l y -c n $OUTPUT/$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.${PKGTYPE:-tgz}
diff --git a/audio/calf-ladspa/calf-ladspa.info b/audio/calf-ladspa/calf-ladspa.info
new file mode 100644
index 0000000000..33bb8368d5
--- /dev/null
+++ b/audio/calf-ladspa/calf-ladspa.info
@@ -0,0 +1,10 @@
+PRGNAM="calf-ladspa"
+VERSION="0.0.19kx"
+HOMEPAGE="http://kxstudio.sourceforge.net/Plugins"
+DOWNLOAD="http://urchlay.naptime.net/~urchlay/src/calf-0.0.19kx.tar.gz"
+MD5SUM="ba2147ddc53022ddf1ffdf28c3340a57"
+DOWNLOAD_x86_64=""
+MD5SUM_x86_64=""
+REQUIRES="jack-audio-connection-kit ladspa_sdk fluidsynth"
+MAINTAINER="B. Watson"
+EMAIL="yalhcru@gmail.com"
diff --git a/audio/calf-ladspa/calf.desktop b/audio/calf-ladspa/calf.desktop
new file mode 100644
index 0000000000..a5d65f428e
--- /dev/null
+++ b/audio/calf-ladspa/calf.desktop
@@ -0,0 +1,12 @@
+[Desktop Entry]
+Name=Calf Plugin Pack for JACK
+Name[pl]=Zestaw wtyczek Calf
+Name[ru]=Набор эффектов и инструментов Calf для JACK
+Comment=Process and produce sounds using a set of plugins with JACK interface
+Comment[pl]=Przetwarzaj i generuj dźwięk używając zestawu wtyczek zgodnych z JACK
+Comment[ru]=Обработка и создание музыки при помощи эффектов и инструментов через JACK
+Exec=calfjackhost
+Terminal=false
+Type=Application
+Categories=AudioVideo;Audio;
+Icon=calf
diff --git a/audio/calf-ladspa/slack-desc b/audio/calf-ladspa/slack-desc
new file mode 100644
index 0000000000..495567f433
--- /dev/null
+++ b/audio/calf-ladspa/slack-desc
@@ -0,0 +1,19 @@
+# HOW TO EDIT THIS FILE:
+# The "handy ruler" below makes it easier to edit a package description.
+# Line up the first '|' above the ':' following the base package name, and
+# the '|' on the right side marks the last column you can put a character in.
+# You must make exactly 11 lines for the formatting to be correct.  It's also
+# customary to leave one space after the ':' except on otherwise blank lines.
+
+           |-----handy-ruler------------------------------------------------------|
+calf-ladspa: calf-ladspa (legacy audio plugin pack for LADSPA, DSSI, and JACK)
+calf-ladspa:
+calf-ladspa: Calf audio plugin pack for LADSPA, DSSI, and JACK. Contains
+calf-ladspa: effects (flanger, reverb, tape-like delay, phaser, rotary speaker,
+calf-ladspa: multi-mode filter, multi-tap chorus and compressor) and instruments
+calf-ladspa: (organ simulator and a monophonic synthesizer).
+calf-ladspa:
+calf-ladspa:
+calf-ladspa:
+calf-ladspa:
+calf-ladspa: