Changing music track after one has stopped issue

Hey guys. I am having a small issue. I am using Unity 5 and want to have one music track loop after the first one stops. I play the 1st track on awake. Then in my playmusic method I simply have a for loop that goes through my audio sources

Code (CSharp):

1. public void PlayMusic(string audioClipName)
2.     {
3.         for (int i = 0; i < audioSources.Count; i++)
4.         {
5.             if (audioSources[i].clip.name == audioClipName)
6.             {
7.                 audioSources[i].Play();
8.             }
9.             else
10.             {
11.                 if (audioSources[i].isPlaying)
12.                 {
13.                     audioSources[i].Stop();
14.                 }
15.             }
16.         }

In my Update I have a case statement and during the gameplay scene I have:

Code (CSharp):

1. if (!GamePlayMusicOne.isPlaying)
2.                     {
3.                         PlayMusic("GameplayMusicTwo");
4.                         Debug.Log("Music two");
5.                     }
6.                     break;

When I put a breakpoint in my if statement and step through ti goes to my playmusic method and actually starts playing the track.. When I am play test this the second track never starts. Very confused.