acdcbag.sh

#!/bin/bash

function synth {
    play -n synth 3 $(
        for note in $(echo "$1"); do
            echo square $note
        done
    ) tempo "$2"
}

synth 'A C D C F A G' 1
synth 'C' 1
synth 'D' 1
synth 'C' 1
synth 'F' 1
synth 'A' 1
synth 'G' 1