We used: elego uno R3, female to male dupont wires and one passive buzzer. The original codes the eight different sounds, each sound lasting 0.5 seconds: from Alto Do (523Hz), Re (587Hz), Mi (659Hz), Fa(698Hz), So(784HZ), La(880Hz), Si(988Hz) to Treble Do (1047Hz).
As a test, we change the frequency and duration of the notes.
Embedded Systems blog, group 1 