Private Declare Function Beep Lib "kernel32" (ByVal dwFreq As Long, ByVal dwDuration As Long) As Long

Private Declare Function Beep Lib "kernel32" (ByVal dwFreq As Long, ByVal dwDuration As Long) As Long

Private Sub Command1_Click()
 For i = 1 To 5
  Beep 700 * i, 450
 Next i
End Sub

Private Sub Command2_Click()
 Beep 4000, 3000
End Sub

Private Sub Command3_Click()
 For i = 1 To 30
  Beep 2 ^ i, 100
 Next i
End Sub

Private Sub Command4_Click()
 For x = 4 To 10
    For y = 1 To 50
        Beep x * (y + x), 5 + x
    Next y
 Next x
 Beep 2000, 500
End Sub

Private Sub Command5_Click()
    For x = 1 To 450
        s = Round(x Mod 5)
        Beep s * x, 30
    Next x
End Sub

Private Sub Command6_Click()
    Randomize
    For x = 1 To 10
        num = Int(Rnd * 1000) + 100
        dur = Int(Rnd * 100) + 50
        
        Beep num, dur
    Next x
End Sub