Looking for a song to mix...for free!

Hello musicians,

First - sorry mods if this isn't an appropriate place for this post...but you guys seem like the group of people I'm looking for.

I have a small project studio that I am trying to get off the ground. I've been mixing for years, and am passionate about it. It's what I love to do. Right now I'm just trying to build a nice portfolio of what I can do with audio so I have something to show future potential clients. I am trying to make some before and after samples, as well as some completed songs. Here's where you come in...

If you have a song or two that you would like mixed and mastered I'd be happy do do it for free, as long as I can use it in my portfolio as well. We can both benefit. I do this as a side gig, so my turnaround may not be as quick as a big studio...but I try to get things done quickly. Let me know if you are interested...right now I'm looking for some acoustic singer/songwriter style tracks to fill out my portfolio, but if something different sounds fun to me I'll try it out.

Thanks, looking forward to hearing some new sounds. :)