The absolute best way to get my latest Celtic songs is to join my mailing list on Reverbnation. You can not only download some of my newer MP3s, but as a subscriber, you can download even more that are exclusive to my mailing list subscribers.
This used to be my number one website for free Celtic MP3s, but it hasn't been updated in a few years. Nevertheless, there's a bunch of free Celtic songs that are still available.
If you like funn music, then join The Funny Music Project. This is a website that highlights artists who perform funny songs. I happen to be the funny Celtic musician in the mix. This page links to my funny Celtic geek songs
Podsafe Music Network
If you are a podcaster, much of my music is listed under the PMN. Of course, you don't have to be limited to those songs. You are more than welcome to play any of my songs from my catalog. But this is a good place to get started.
I haven't updated this page in a while, but it highlights some of my more folksy music.
I have a LOT of websites that offer free Celtic MP3s. I'm gonna try and list some of those sites right here.
Irish Song Lyrics
Years ago, I decided to teach people Irish and Celtic songs the way I learn them, by ear. Thus was born, my Irish Song Lyrics website. Not only will find song lyrics, but you'll also find numerous Celtic MP3s that you can download through the site. Look for the podcast in particular.
Brobdingnagian Bards - Free Music Downloads - Scottish Irish MP3s
I first started giving away music with my old band. We gave away over a million MP3s as a group. We've been called "legendary" and were one of the Top 10 bands on MP3.com (of all genres). You can download over 20 MP3s from this website. Oh! Also check out the Celtic Lyrics page which is the original Brobdingnagian Bards original version of the Irish Song Lyrics website but highlights more of the Bards' music.
Free Cat Song MP3s
Do you love cats? Do you love Celtic music? Then download these crazy fun Celtic cat songs from my Irish Drinking Songs for Cat Lovers album series.
This section is a bit old, but I want to update it. Each page is dedicated to more specific set of keywords. I will update you as I add more pages.
Marc Gunn's Complete Discography
A complete list of all the CDs I've recorded as a solo artist and in bands.
How St Patrick's Day Launched a Celtic MP3 Empire
The ultimate article detailing not only the history of my Celtic MP3 empire, but also links to many of the pages I have created offering free Celtic songs.