diff --git a/releases/101_Gnarly_C1ZZL3/info.yaml b/releases/101_Gnarly_C1ZZL3/info.yaml
index 40408793..b0616de1 100644
--- a/releases/101_Gnarly_C1ZZL3/info.yaml
+++ b/releases/101_Gnarly_C1ZZL3/info.yaml
@@ -15,6 +15,7 @@ Status: Beta - stable in single-developer testing
 License: MIT
 date-created: 2026-07-22
 Editor: web
+demo-link: https://www.youtube.com/watch?v=OwlnbzgJ3Lg
 
 tags:
   - synth
@@ -150,6 +151,9 @@ host:
     Web MIDI: use the Gnarly Lab for Amp1/Amp2, PD1/PD2, Pitch1/Pitch2,
     recipe bank, named sound presets, and CZ Import Lab handoff.
 
+    Demo video note: for the main Turing-enabled Core 1.4 / Rad v9 branch, also
+    refer to the Cosmik C1ZZL3 demo video.
+
 
     MIDI CC map: CC1 = oscillator 1 phase distortion; CC20 = oscillator 1
     recipe slot; CC21 = oscillator 2 recipe slot; CC22 = ring modulation;
diff --git a/releases/29_XHT/info.yaml b/releases/29_XHT/info.yaml
index 5346f515..22e15242 100644
--- a/releases/29_XHT/info.yaml
+++ b/releases/29_XHT/info.yaml
@@ -11,6 +11,7 @@ License: GPL-3.0
 date-created: 2026-07-11
 date-updated: 2026-07-12
 Editor: none
+demo-link: https://www.youtube.com/watch?v=76RNe7uglP4
 
 tags:
   - synthesizer
diff --git a/releases/34_dual_quant/info.yaml b/releases/34_dual_quant/info.yaml
index f88893f6..3fc329f6 100644
--- a/releases/34_dual_quant/info.yaml
+++ b/releases/34_dual_quant/info.yaml
@@ -9,6 +9,7 @@ Status: Beta - stable in single-developer testing
 License: MIT
 date-created: 2026-06-14
 date-updated: 2026-06-15
+demo-link: https://www.youtube.com/watch?v=U5x2nZ9EiMI
 panel:
   inputs:
     - id: AudioIn1
diff --git a/releases/433_sense_of_space/info.yaml b/releases/433_sense_of_space/info.yaml
index ef21bad5..946cae84 100644
--- a/releases/433_sense_of_space/info.yaml
+++ b/releases/433_sense_of_space/info.yaml
@@ -7,6 +7,7 @@ Status: Beta - stable in single-developer testing
 License: Mixed - source code/reverb components follow their original project licences; embedded BBC Sound Effects audio is subject to BBC Sound Effects Archive licensing
 date-created: 2026-07-14
 date-updated: 2026-07-16
+demo-link: https://www.youtube.com/watch?v=9wxg1nU-I7g
 
 contact:
   social:
diff --git a/releases/43_Castle_Process/info.yaml b/releases/43_Castle_Process/info.yaml
index 32b053e2..290e30ca 100644
--- a/releases/43_Castle_Process/info.yaml
+++ b/releases/43_Castle_Process/info.yaml
@@ -13,6 +13,7 @@ Status: Beta - stable in single-developer testing
 License: MIT
 date-created: 2026-06-25
 date-updated: 2026-06-25
+demo-link: https://www.youtube.com/watch?v=iS8HaeX_z_Y
 panel:
   inputs:
     - id: AudioIn1
diff --git a/releases/49_Tape_Bias/info.yaml b/releases/49_Tape_Bias/info.yaml
index 9e4aa2af..82e241bd 100644
--- a/releases/49_Tape_Bias/info.yaml
+++ b/releases/49_Tape_Bias/info.yaml
@@ -13,6 +13,7 @@ Status: Beta - stable in single-developer testing
 License: MIT
 date-created: 2026-07-30
 date-updated: 2026-07-31
+demo-link: https://www.youtube.com/watch?v=F0PJVCJKk94
 uf2:
   - path: uf2/TapeBias.uf2
     name: Tape Bias 0.1.1 (current stable)
diff --git a/releases/52_F1shnet/info.yaml b/releases/52_F1shnet/info.yaml
index 6b1b6fba..31fa0c36 100644
--- a/releases/52_F1shnet/info.yaml
+++ b/releases/52_F1shnet/info.yaml
@@ -16,6 +16,7 @@ Status: Beta Stable in testing by one individual
 License: MIT
 date-created: 2026-07-28
 date-updated: 2026-08-01
+demo-link: https://www.youtube.com/watch?v=XYNgTV4XgsE
 tags:
   - effect
   - filter
diff --git a/releases/54_Tapegrade/info.yaml b/releases/54_Tapegrade/info.yaml
index f15e5e27..c6ed1a4e 100644
--- a/releases/54_Tapegrade/info.yaml
+++ b/releases/54_Tapegrade/info.yaml
@@ -11,6 +11,7 @@ Creator: Adrian Vos
 Version: 0.8.0
 Status: Beta - stable in single-developer testing
 License: MIT
+demo-link: https://www.youtube.com/watch?v=X9NSBJfStic
 panel:
   inputs:
     - id: AudioIn1
diff --git a/releases/58_LoChoVibes/info.yaml b/releases/58_LoChoVibes/info.yaml
index a3d71fb2..d986b813 100644
--- a/releases/58_LoChoVibes/info.yaml
+++ b/releases/58_LoChoVibes/info.yaml
@@ -12,6 +12,7 @@ Creator: Adrian Vos
 Version: 0.1.0
 Status: Beta - stable in single-developer testing
 License: MIT
+demo-link: https://www.youtube.com/watch?v=rggZFG6SX6M
 panel:
   inputs:
     - id: AudioIn1
diff --git a/releases/59_BitPhase/info.yaml b/releases/59_BitPhase/info.yaml
index 564823dc..60c21f3d 100644
--- a/releases/59_BitPhase/info.yaml
+++ b/releases/59_BitPhase/info.yaml
@@ -12,6 +12,7 @@ Status: Beta - stable in single-developer testing
 License: MIT
 date-created: 2026-06-24
 date-updated: 2026-07-09
+demo-link: https://www.youtube.com/watch?v=FQv6VNLOOzs
 panel:
   inputs:
     - id: AudioIn1
diff --git a/releases/74_Wild_Pebble/info.yaml b/releases/74_Wild_Pebble/info.yaml
index ff4475fd..9f34885a 100644
--- a/releases/74_Wild_Pebble/info.yaml
+++ b/releases/74_Wild_Pebble/info.yaml
@@ -9,6 +9,7 @@ Status: Beta - stable in single-developer testing
 License: GPL-3.0
 date-created: 2026-06-14
 date-updated: 2026-06-25
+demo-link: https://www.youtube.com/watch?v=j9mWfKfPwmk
 panel:
   inputs:
     - id: PulseIn1
diff --git a/releases/84_CosmikC1zzl3/info.yaml b/releases/84_CosmikC1zzl3/info.yaml
index a3f25c1e..154dd625 100644
--- a/releases/84_CosmikC1zzl3/info.yaml
+++ b/releases/84_CosmikC1zzl3/info.yaml
@@ -14,6 +14,7 @@ Creator: Adrian Vos
 Version: "1.4"
 Status: Beta - stable in single-developer testing
 License: MIT
+demo-link: https://www.youtube.com/watch?v=wv4BscxiBcc
 uf2:
   - path: uf2/C1ZZL3_CORE.uf2
     name: Core 1.4
@@ -180,6 +181,9 @@ host:
     C1ZZL3 Import Lab: Hosted browser translator for Casio CZ `.syx` patches,
     with pitch-aware handoff into Envelope Lab for final editing and sending.
 
+    Demo video note: for the separate no-Turing branch with recipe-bank
+    performance controls, also refer to the C1ZZL3 Gnarly demo video.
+
 
     MIDI CC1 controls phase distortion, CC20 detune, CC21 ring modulation, CC22
     noise,
diff --git a/releases/87_fr330hfr33/info.yaml b/releases/87_fr330hfr33/info.yaml
index c139ac23..39f10c2b 100644
--- a/releases/87_fr330hfr33/info.yaml
+++ b/releases/87_fr330hfr33/info.yaml
@@ -12,6 +12,7 @@ Status: Beta - stable in single-developer testing
 License: MIT
 date-created: 2026-06-21
 date-updated: 2026-07-13
+demo-link: https://www.youtube.com/watch?v=akCfu8_vuSw
 panel:
   inputs:
     - id: CVIn1
diff --git a/releases/93_Turing_Matrix/info.yaml b/releases/93_Turing_Matrix/info.yaml
index cdcc897b..14517fb6 100644
--- a/releases/93_Turing_Matrix/info.yaml
+++ b/releases/93_Turing_Matrix/info.yaml
@@ -11,6 +11,7 @@ Status: Beta - stable in single-developer testing
 License: GPL-3.0-or-later
 date-created: 2026-06-26
 date-updated: 2026-07-13
+demo-link: https://www.youtube.com/watch?v=F59vXwbCjhs
 panel:
   inputs:
     - id: PulseIn1