diff --git a/pages/incubation.audio.synthesis.concatenative.md b/pages/incubation.audio.synthesis.concatenative.md
index 42a0192..6cdaecc 100644
--- a/pages/incubation.audio.synthesis.concatenative.md
+++ b/pages/incubation.audio.synthesis.concatenative.md
@@ -32,6 +32,8 @@
 	- http://imtr.ircam.fr/imtr/Diemo_Schwarz
 - https://github.com/benhackbarth/audioguide
 	- OSX but promising
+- https://rodrigoconstanzo.com/combine/ 
+	- also M4L or runtime
 	
 #### Audiostellar [8/10]
 - https://audiostellar.xyz/
@@ -60,8 +62,8 @@ https://www.flucoma.org/
 https://gitlab.com/then-try-this/samplebrain
 
 #### cataRT
-https://ircam-ismm.github.io/max-msp/catart.html#videos
-
+- https://ircam-ismm.github.io/max-msp/catart.html#videos
+- it is backed by https://ircam-ismm.github.io/max-msp/mubu.html
 ### Unsorted
 - https://en.wikipedia.org/wiki/Festival_Speech_Synthesis_System
 - https://en.wikipedia.org/wiki/ESpeak