beat match {
    => beat with { beat 0.75 < } {
        f4♯
    }
    => beat with { beat 1 >= beat 1.75 < and } {
        g4♯
    }
    => beat with { beat 2 >= beat 2.75 < and } {
        c4♯
    }
    => beat with { beat 3 >= beat 3.75 < and } {
        d4♯
    }
    => beat with { beat 4 >= beat 4.75 < and } {
        c4♯
    }
    => _ {
        0
    }
}