Excel Accelerated Buttons Working Only Once

[DHero]

I've developed a simple user form with a bunch of buttons that, when pressed, play a sound. I've also assigned a custom "accelerate" key to each button in a manner which when I press Alt + key the button is activated. The problem is, this happens only once for each button! Every subsequent activation through the accelerate key return an error beep. How to make it so the activation of the buttons canh be repeated in this way?

Some reference follows:
Redirecting (For the custom sounds)

Private Sub CommandButton1_Click()
        Me.CommandButton1.Accelerator = A
        Beep 800, 300
        Me.CommandButton1.SetFocus
End Sub

Code snippet for the buttons, they all look the same.

 

[DHero]

I've figured it out. By using the line "Me.CommandButton1.Accelerator = A" on every button it was, somehow, redefining the shortcut for acceleration. Removing it and defining the shortcut through the properties window works fine.