I don't really know what do you mean about the guitar, I guess you are talking about the sound of this one ?
About SoundCloud, it's easy, just go to your track on SoundCloud and click on "Share", then "Embed" and copy everything in the "Code and preview" box and then paste it into your Steemit post. You must use the Embed code NOT the "Share" link.
Great thanks. Will try that out!
You're welcome !