diff --git a/csound-catalog.cabal b/csound-catalog.cabal
--- a/csound-catalog.cabal
+++ b/csound-catalog.cabal
@@ -1,5 +1,5 @@
 Name:          csound-catalog
-Version:       0.7.4
+Version:       0.7.5
 Cabal-Version: >= 1.22
 License:       BSD3
 License-file:  LICENSE
@@ -29,7 +29,7 @@
   Build-Depends:
         base >= 4, base < 5,
         transformers >= 0.3,
-        csound-expression >= 5.3.4,
+        csound-expression >= 5.4.0,
         csound-sampler >=0.0.10.0,
         sharc-timbre
   Hs-Source-Dirs:      src/
diff --git a/src/Csound/Catalog/Drum.hs b/src/Csound/Catalog/Drum.hs
--- a/src/Csound/Catalog/Drum.hs
+++ b/src/Csound/Catalog/Drum.hs
@@ -38,7 +38,7 @@
 trBd, trSn, trOhh, trChh, trHtom, trMtom, trLtom, trCym, trCl, trRim, trMar, trHcon, trMcon, trLcon :: Sam
 
 trBd   = T.bd
-trSn   = T.sn
+trSn   = T.sn1
 trOhh  = T.ohh
 trChh  = T.chh
 trHtom = T.htom
diff --git a/src/Csound/Catalog/Drum/Tr808.hs b/src/Csound/Catalog/Drum/Tr808.hs
--- a/src/Csound/Catalog/Drum/Tr808.hs
+++ b/src/Csound/Catalog/Drum/Tr808.hs
@@ -12,10 +12,10 @@
   maraca', marSpec, highConga', hcSpec, midConga', mcSpec, lowConga', lcSpec, cowSpec, cowbell',
 
   -- * Sampler
-  bd, bd2, sn, ohh, chh, htom, mtom, ltom, cym, cl, rim, mar, hcon, mcon, lcon, cbell,
+  bd, bd2, sn1, ohh, chh, htom, mtom, ltom, cym, cl, rim, mar, hcon, mcon, lcon, cbell,
 
   -- ** Generic
-  bd', bd2', sn', ohh', chh', htom', mtom', ltom', cym', cl', rim', mar', hcon', mcon', lcon', cbell'
+  bd', bd2', sn1', ohh', chh', htom', mtom', ltom', cym', cl', rim', mar', hcon', mcon', lcon', cbell'
 
 ) where
 
@@ -474,8 +474,8 @@
 bd2 = mkSam bass2
 
 -- | Snare
-sn :: Sam
-sn = mkSam snare
+sn1 :: Sam
+sn1 = mkSam snare
 
 -- | Open hi-hat
 ohh :: Sam
@@ -541,8 +541,8 @@
 bd2' = mkSam' bass2'
 
 -- | Snare
-sn' :: TrSpec -> Sam
-sn' = mkSam' snare'
+sn1' :: TrSpec -> Sam
+sn1' = mkSam' snare'
 
 -- | Open hi-hat
 ohh' :: TrSpec -> Sam