local function playTheme()
    for _, note in ipairs(melody) do
        local pitch = note[1]
        local delay = note[2]
        
        if pitch > 0 then
            speaker.playNote(inst, 1.0, pitch)
        end
        sleep(delay)
    end
end

print("Crazy Frog Doorbell Active.")
while true do
    os.pullEvent("redstone")
    if rs.getInput("back") then -- Change "back" to your button's side
        print("BING BING!")
        playTheme()
        sleep(2) -- Cooldown
    end
end