Who Am I?

When you call to me, I am gone.
If you seek to capture me, there’s nothing to hold.
Between words, I speak to you.
Between the notes of a song, my voice rings clear.
In the rustling of leaves, hear my whisper.
In the thunder’s mighty roar, I repose.
Wait on me, and you’ll surely find,
for those who know me, find peace in mind.