Still learning about animation stuff. I added an audio source to this animation that starts off with no audio, then a few seconds in plays an audio clip....however where it says "audio also plays here" I want it to play the same audio clip again. As, overlapping while still playing the first clip. I added a second keyframe there assuming that'd play the clip again but nothing actually happens?

How exactly do I make it play the same audio clip once more without silencing the first clip?