Why music script stops working during middle of song?

The first track value plays for about 30 seconds or so, and then it cuts out and doesn't continue. Any ideas on how to fix this?

Mainly looking at the while loop for the problem.

local songs = game.Workspace.trackList

local sound = Instance.new("Sound", songs)
sound.Name = "MusicPlayer"
sound.Volume = volume

local musicLength = songs.MusicPlayer.TimeLength

while true do
    for i = 1, #trackValues do
        sound.SoundId = trackValues[i]
        songs.MusicPlayer:Play()
        wait(musicLength)
        sound.MusicPlayer:Stop()
        wait(3)
    end
end