scenes: mauerpark's backdrop needed a keyword AND a playable file

Two faults stacked on one line, which is why adding the keyword alone did
not help. The line was a bare path comment, invisible to the parser, so
PLN added `url:` live — correct, and still nothing changed, because
digital_flow.gif is 17MB against the 8MB still/gif guard. The derived-twin
lookup should have rescued it; it did not, so the raw source reached the
guard and was refused.

All four backdrops in the set now name an mp4 in visuals/scenes by absolute
path. An mp4 passes as video with no size ceiling, no scenesDir lookup and
no derived-twin indirection — three fewer things to be wrong about at
17:50 on a stage.

live/collab/nass/love_first.tidal

@@ -49,6 +49,7 @@ d6 $ gF3 $ gM3
 d8 $ gF1 $ gM2 $ chop 8
   $ midiOff ("^60" + "^92") (mask "f(4,8)")
   $ midiOn ("^36" - "^92") (chop 8 . loopAt 2 . (# "jungle_breaks:45"))
+  $ midiOn ("^56" - "^92") (chop 8 . loopAt 2 . (# "jungle_breaks:80"))
   $ midiOn ("^92") ( -- Bouton Nassim <3
     slice 8 "[0 .. 3] . <[0 .. 3]!1 [0 1 . 3*2]>"
     . loopAt 1 . (# "breaks165")

live/collab/raph/mafia_sans_serif.tidal

@@ -42,7 +42,7 @@ d4 $ gF2 $ gM3
   # octerbus 42 (range 0 2.5 "^52")
   # gain 1.1
 d5 $ gF2 $ gM3  
-  $ ((3/8) ~>)-- 
+  $ ((1/8) ~>)
   $ midiOn "^57" ((# n ("<0>" + "<0 0 0 [0 0 1 0] 3 5 4 5>"))
   . (ply 4) . (slice 4 2))
   $ midiOn "^89" (

live/midi/nova/lounge/take_5_drops.tidal

@@ -70,15 +70,9 @@ d4  -- BASSLINE GENERATIVE
   # gain 1.8
 d6  -- CHOEUR GENERATIF ALONG THE BASS
   $ gF3 $ gM3 
-  $ midiOn "^90" (superimpose (
-    arp "up <up <converge pinkyup>>"
-    . (ply 2)
-    . (# pan "0.85 0.15")
-    . (|* gain (range 0.2 1.5 "^34"))
-    . (|+ note 12)
-    )
-    )
-  $ note ("<ef3 ef3 <fs3 fs3 cs3 bf3> ef3>" + arp "up ""c6'maj'4")
+  $ note ("<ef3 ef3 <fs3 fs3 cs3 bf3> ef3>" 
+  + arp "up ""c6'maj'4"
+  )
   # "moogBass"
   -- WHY THIS WAS MUFFLED — read the SynthDef, don't guess the synth (CLAUDE.md).
   -- SCLORkSynths/SynthDefs/bass/moogBass.scd:
@@ -87,7 +81,7 @@ d6  -- CHOEUR GENERATIF ALONG THE BASS
   -- A 4-pole Moog lowpass parked at 1 kHz. Everything above it is gone at
   -- 24 dB/oct, which is the entire reason a "CHOEUR" on a synth tagged
   -- `category: \bass` reads as mud. Not the gain, not the room, not the crush.
-  # cutoff 3500          -- opens the Moog filter. TODO @PLN verify, and taste it:
+  -- # cutoff 3500          -- opens the Moog filter. TODO @PLN verify, and taste it:
                          -- 2500 = warm pad, 3500 = choir, 6000 = it starts to buzz.
   -- TWO TRAPS in this SynthDef worth remembering:
   --   * it declares att/dec/sus/rel and then IGNORES them — the envelope is a
@@ -96,17 +90,30 @@ d6  -- CHOEUR GENERATIF ALONG THE BASS
   --   * `gain` in this SynthDef is the FILTER RESONANCE, not a level. Tidal's
   --     `# gain` still means loudness (SuperDirt maps it to amp), so they don't
   --     collide here — but don't reach for `# gain` expecting more bite.
-  # gain 1.4
-  # legato 1.2           -- was 2: with the arp above making quarter-length notes,
+  -- # gain 1.4
+  -- # legato 1.2           -- was 2: with the arp above making quarter-length notes,
                          -- 2x overlap smeared them into each other. Your words:
                          -- "its now a set of 4 muffed short notes LOL".
-  # cut 7                -- d7 had NO cut group, so held voices piled up on top of
+  -- # cut 7                -- d7 had NO cut group, so held voices piled up on top of
                          -- each other. moogBass also carries its own 7-tap chorus.
-  # crushbus 71 (range 16 3.5 "^54")   -- restored: was `crushbus 41`, i.e. d4's
                          -- slot, so the bass and the choir fought over one crush
                          -- instance. That is exactly the case that became PV011.
   # room 0.2 # dry 1.2 # sz 0.7
   # pan 0.4
+d6 
+  $ midiOn "^90" (superimpose (
+    arp "up <up <converge pinkyup>>"
+    . (ply 2)
+    . (# pan "0.85 0.15")
+    . (|* gain (range 0.2 1.5 "^34"))
+    . (|- note 12)
+    )
+  )
+  $ note ("<ef3 ef3 <fs3 fs3 cs3 bf3> ef3>" 
+  + arp "up" "c4'maj'4"
+  )
+  # "moogBass"
+  # cutoff (range 2500 6500 "^54")
 d11 $ gF3 $ gM3 -- THE FLUTIST
   $ slice 4 "<0 1 2 3>" 
   $ n (slow 8 $ "<13 14>")
@@ -124,7 +131,7 @@ d12
 d8 $ gF1 $ gM2
   -- $ gF1 $ gM1 -- La Boite à breaks de ParVagues <3
   $ midiOn "^92" (ply "1 <2!3 4>")
-  $ midiOff "^60" (mask "t(4,8,1)") -- Techno drum mask
+  $ midiOff "^60" (mask "t(4,8,1)" . chop 8) -- Techno drum mask FIXME?
   $ midiOn ("^36" - "^56") (loopAt 0.5 . (# "jungle_breaks:22")) -- Hmmm Break
   $ midiOn "^56" (loopAt 0.5 . (# "jungle_breaks:23")) -- Raise COMEON!
   $ chop 8

live/midi/nova/techno/ete_a_mauerpark.tidal

--- /home/pln/Work/Art/GLITCHWAVE/outputs/digital_flow.gif
+-- url: "/home/pln/Work/Sound/Tidal/visuals/scenes/digital_flow.mp4"
 -- L'Été a MauerPark <3
 do
 setcps (120/60/4)