Music channel /radio without electromagnetic wave

1char noteNames[]={'C','D','E','F','G','a','b'};
2unsigned int frequencies[]={262,294,330,349,392,440,494};
3const byte notecount=sizeof(noteNames);
4const int speakerpin=9;
5const int channelpin=A0;
6char score_1[]="CCGGaaGFFEEDDC GGFFEEDGGFFEED CCGGaaGFFEEDDC";//"Twinkle, twinkle little star"
7const byte scorelen_1=sizeof(score_1);
8char score_2[]="EDCDEEEDDDEGG EDCDEEEEDDEDC";//"mary had a little lamb"
9const byte scorelen_2=sizeof(score_2);
10char score_3[]="CEFGCEFGCEFGECED EEDCCEGGGFEFGECDC";//"When The Saints Go Marching"
11const byte scorelen_3=sizeof(score_3);
12char score_4[]="GCDEEEDECCCDEFaaGFE CDEFaaGFECCDEFDDEC";//"You Are My Sunshine"
13const byte scorelen_4=sizeof(score_4);
14char score_5[]="GCDECEDCDGbDFDbCDC GCDECEDCDGbDFDbCDC ";//"Down In The Valley"
15const byte scorelen_5=sizeof(score_5);
16char score_6[]="CDECCDECEFGEFG GaGFECGaGFECCGCCGC";//"Frere Jacques"
17const byte scorelen_6=sizeof(score_6);
18char score_7[]="GCCDEEDCaGGCbCDEFD DEFGFEDCEDCaGGaCC";//"The Water Is Wide "
19const byte scorelen_7=sizeof(score_7);
20char score_8[]="GCECEDCaGGCECEDG EGEGECGaCCaG GCECEDC";//"amazing Grace"
21const byte scorelen_8=sizeof(score_8);
22char score_9[]="CCDECEDCCDECb CCDEFEDCbGabCC abaGabCGaGFEG abaGabCaGCbDCC";//"Yankee Doodle"
23const byte scorelen_9=sizeof(score_9);
24char score_10[]="EEGEEGEGCbaaG DEFDDEFDFbaGbC CCaFGECFGFEDC";//"Brahms Lullaby"
25const byte scorelen_10=sizeof(score_10);
26int duration=333;
27int channel=0;
28int oldchannel=0;
29
30
31
32
33void setup() {
34  // put your setup code here, to run once:
35pinMode (speakerpin, OUTPUT);
36pinMode (channelpin, INPUT);
37Serial.begin(9600);
38}
39
40void loop() {
41  // put your main code here, to run repeatedly:
42int potreading=analogRead(channelpin);
43if (potreading>900)
44    {
45      channel=10;
46    }
47     else if (potreading>800)
48     {
49       channel=9;
50     }
51        else if (potreading>700)
52        {
53          channel= 8 ;
54          }
55          else if (potreading>600)
56          {
57           channel=7; 
58           }
59           else if (potreading>500)
60             {
61              channel=6;               
62             }
63              else if (potreading>400)
64               {
65                 channel= 5; 
66               }
67                  else if (potreading>300)   
68                  {
69                    channel=4;
70                  }  
71                    else if (potreading>200)  
72                     {
73                       channel=3;
74                     } 
75                        else if (potreading>100)    
76                        {
77                          channel=2;
78                        }   
79                           else if (potreading>0)  
80                           {
81                             channel=1;
82                             } 
83                              else
84                                {channel=0;}
85
86
87Serial.println(channel);
88if (channel==1){
89  for (int i=0;i< scorelen_1; i++)
90   {
91   //int duration=333;
92
93    playnote(score_1[i],duration);
94   }
95}
96   
97    else if (channel==2)
98    {
99      for (int i=0;i< scorelen_2; i++)
100       {
101       //int duration=333;
102
103       playnote(score_2[i],duration);
104       }
105    }
106        else if (channel==3)
107         {
108           for (int i=0;i< scorelen_3; i++)
109           {
110            //int duration=333;
111
112            playnote(score_3[i],duration);
113            }
114           }
115           else if (channel==4)
116             {
117               for (int i=0;i< scorelen_4; i++)
118                
119              //int duration=333;
120
121               playnote(score_4[i],duration);
122              }
123                 else if (channel==5)
124                  {
125                    for (int i=0;i< scorelen_5; i++)
126                        {
127                         //int duration=333;
128
129                        playnote(score_5[i],duration);
130                         }
131                    }
132                     else if (channel==6)
133                            {
134                            for (int i=0;i< scorelen_6; i++)
135                               {
136                                //int duration=333;
137
138                               playnote(score_6[i],duration);
139                                }
140                            }  
141                             else if (channel==7)
142                                 {
143                                   for (int i=0;i< scorelen_2; i++)
144                                    {
145                                       //int duration=333;
146
147                                       playnote(score_2[i],duration);
148                                     }
149                                   } 
150                                    else if (channel==8)
151                                      {
152                                        for (int i=0;i< scorelen_8; i++)
153                                           {
154                                              //int duration=333;
155
156                                               playnote(score_8[i],duration);
157                                              }
158                                       }
159                                        else if (channel==9)
160                                            {
161                                               for (int i=0;i< scorelen_9; i++)
162                                                  {
163                                                   //int duration=333;
164
165                                                    playnote(score_9[i],duration);
166                                                   }
167                                             }
168                                                 else if (channel==10)
169                                                      {
170                                                          for (int i=0;i< scorelen_10; i++)
171                                                                {
172                                                                  //int duration=333;
173
174                                                                  playnote(score_10[i],duration);
175                                                                 }
176                                                       }                                             
177                               
178   
179  delay(4000);
180  
181  }
182void playnote (char note, int duration)
183{
184for (int i =0; i< notecount; i++)
185{
186     if (noteNames[i]==note) 
187         tone(speakerpin,frequencies[i],duration);
188      
189}
190
191delay(duration);
192
193
194}