diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -15,3 +15,10 @@
 ## 0.1.1.1 -- 2020-01-08
 
 * First version revised C. Fixed an issue with the wrong written function call.
+
+## 0.2.0.0 -- 2020-01-10
+
+* Second version. Added a possibility to use a command line argument 
+obtained e. g. from the usage of mmsyn7s package (for more information, 
+please, refer to: https://hackage.haskell.org/package/mmsyn7s).
+
diff --git a/Main.hs b/Main.hs
--- a/Main.hs
+++ b/Main.hs
@@ -5,25 +5,48 @@
 --
 -- Maintainer  :  olexandr543@yahoo.com
 --
--- A program and a library to modify the amplitude of the sound representations for 
+-- A program and a library to modify the amplitudes of the sound representations for 
 -- the Ukrainian language created by mmsyn7ukr package or somehow otherwise.
 --
 
 module Main where
 
 import MMSyn7l (changeVolume)
+import qualified Data.Vector as V
+import CaseBi (getBFst')
+import System.Environment (getArgs)
+import ReplaceP
 
--- | The main and the only one function in the module.
+-- | The main and the only one function in the module. If you specify a one command line argument, which can be obtained by running @mmsyn7s@ program
+-- with the needed to be sounded (with sound representations) Ukrainian text (please, refer to: https://hackage.haskell.org/package/mmsyn7s).
 main :: IO ()
-main = do 
-  putStrLn "Now you can change the amplitude of the sound representations of the Ukrainian sounds (or something similar). "
-  putStrLn ""
-  mapM_ changeVolume ["A.wav", "B.wav", "C.wav", "D.wav", "E.wav", "F.wav", "G.wav", "H.wav", 
+main = do
+  args <- getArgs
+  if null args
+    then do
+      putStrLn "Now you can change the amplitude of the sound representations of the Ukrainian sounds (or something similar). "
+      putStrLn ""
+      mapM_ changeVolume ["A.wav", "B.wav", "C.wav", "D.wav", "E.wav", "F.wav", "G.wav", "H.wav", 
         "I.wav", "J.wav", "K.wav", "L.wav", "M.wav", "N.wav", "O.wav", "P.wav", "Q.wav", "R.wav", 
           "S.wav", "T.wav", "U.wav", "V.wav", "W.wav", "X.wav", "Y.wav", "Z.wav", "a.wav", "b.wav", "c.wav", 
             "d.wav", "e.wav", "f.wav"]
-  putStrLn ""
-  putStrLn "Now you have changed (or left unchanged) the amplitudes for the sound representations for Ukrainian language. "
-  putStrLn "Please, remember about responsible usage especially in case of processing the real voice sound samples! "
+      putStrLn ""
+      putStrLn "Now you have changed (or left unchanged) the amplitudes for the sound representations for Ukrainian language. "
+      putStrLn "Please, remember about responsible usage especially in case of processing the real voice sound samples! "
+    else do
+      putStrLn "Now you can change the amplitude of the needed sound representations of the Ukrainian sounds (or something similar). "
+      putStrLn ""
+      let xs = concat . take 1 $ args
+          rrs = show . head $ [[xs]]
+          list = read (replaceP rrs)::[String]
+          wws = map (getBFst' ("0.wav", V.fromList . zip ["а","б","в","г","д","дж","дз","е","ж","з","и","й","к","л","м","н","о","п","р","с",
+                       "сь","т","у","ф","х","ц","ць","ч","ш","ь","і","ґ"] $ ["A.wav", "B.wav", "C.wav", "D.wav", "E.wav", "F.wav", "G.wav", "H.wav", 
+                         "I.wav", "J.wav", "K.wav", "L.wav", "M.wav", "N.wav", "O.wav", "P.wav", "Q.wav", "R.wav", 
+                           "S.wav", "T.wav", "U.wav", "V.wav", "W.wav", "X.wav", "Y.wav", "Z.wav", "a.wav", "b.wav", "c.wav", 
+                             "d.wav", "e.wav", "f.wav"])) list
+      mapM_ changeVolume wws
+      putStrLn ""
+      putStrLn "Now you have changed (or left unchanged) the amplitudes for the needed sound representations for the Ukrainian language. "
+      putStrLn "Please, remember about responsible usage especially in case of processing the real voice sound samples! "
 
             
diff --git a/README b/README
--- a/README
+++ b/README
@@ -28,3 +28,10 @@
 then everything is analogously the same, but an interval between the 
 maximum by modulus amplitude value and 0.0 is divided into 10 equal parts 
 and so on.
+
+         ***** Command Line Argument ***** 
+If you specify a command line argument, it must be a sorted list 
+of the Ukrainian sounds representations, which can be obtained by 
+using the mmsyn7s package. For more information, please, refer to:
+https://hackage.haskell.org/package/mmsyn7s
+
diff --git a/mmsyn7l.cabal b/mmsyn7l.cabal
--- a/mmsyn7l.cabal
+++ b/mmsyn7l.cabal
@@ -2,7 +2,7 @@
 -- documentation, see http://haskell.org/cabal/users-guide/
 
 name:                mmsyn7l
-version:             0.1.1.1
+version:             0.2.0.0
 synopsis:            Modifies the amplitude of the sound representations for the Ukrainian language created by mmsyn7ukr package.
 description:         A program and a library to modify the amplitude of the sound representations for the Ukrainian language created by mmsyn7ukr package or somehow otherwise.
 homepage:            https://hackage.haskell.org/package/mmsyn7l
@@ -20,7 +20,7 @@
   exposed-modules:     Main, MMSyn7l
   -- other-modules:
   -- other-extensions:
-  build-depends:       base >=4.7 && <4.14, directory >=1 && <1.5, mmsyn7ukr >=0.5.0.1 && <1, vector >=0.11 && <0.14, mmsyn2 >=0.1.7 && <1
+  build-depends:       base >=4.7 && <4.14, directory >=1 && <1.5, mmsyn7ukr >=0.6.1.1 && <1, vector >=0.11 && <0.14, mmsyn2 >=0.1.7 && <1
   -- hs-source-dirs:
   default-language:    Haskell2010
 
@@ -28,6 +28,6 @@
   main-is:             Main.hs
   -- other-modules:
   -- other-extensions:
-  build-depends:       base >=4.7 && <4.14, directory >=1 && <1.5, mmsyn7ukr >=0.5.0.1 && <1, vector >=0.11 && <0.14, mmsyn2 >=0.1.7 && <1
+  build-depends:       base >=4.7 && <4.14, directory >=1 && <1.5, mmsyn7ukr >=0.6.1.1 && <1, vector >=0.11 && <0.14, mmsyn2 >=0.1.7 && <1
   -- hs-source-dirs:
   default-language:    Haskell2010