diff --git a/sardine/sequences/LexerParser/FuncLibrary.py b/sardine/sequences/LexerParser/FuncLibrary.py
index 7f3011fc..a47362af 100644
--- a/sardine/sequences/LexerParser/FuncLibrary.py
+++ b/sardine/sequences/LexerParser/FuncLibrary.py
@@ -180,6 +180,9 @@ def chordify(x: list) -> list:
     """Turn a list into a chord"""
     return Chord(elements=x)
 
+def anti_speed(x: list) -> list:
+    list_of_silences = [[None]*x for x in range(0, len(x))]
+    return list(zip(x, list_of_silences))
 
 def invert(x: list, how_many: list = [0]) -> list:
     """Chord inversion"""
diff --git a/sardine/sequences/LexerParser/TreeCalc.py b/sardine/sequences/LexerParser/TreeCalc.py
index 754c429b..6f409085 100644
--- a/sardine/sequences/LexerParser/TreeCalc.py
+++ b/sardine/sequences/LexerParser/TreeCalc.py
@@ -423,6 +423,7 @@ def function_call(self, func_name, *args):
             "bass": FuncLibrary.bassify,
             "sopr": FuncLibrary.soprano,
             "invert": FuncLibrary.invert,
+            "aspeed": FuncLibrary.anti_speed,
             # Boolean mask operations
             "euclid": FuncLibrary.euclidian_rhythm,
             "mask": FuncLibrary.mask,