These snippets have piqued my interest as a curiosity. The late-60s Frisco sound is interesting, especially coming out of Lindsey's and Stevie's mouths, but I am not sure these recordings would have mass appeal.
Music has evolved, or some might say devolved, considerably since. Where this Fritz music is and where and Lindsey and Stevie are today is galaxies apart.
Release? Yes, sure, as a curiosity some folks will buy it. But it would not be a massive seller.
It is kind of Javier to share the snippets with us. Perhaps he would like to share full songs if we ask nicely?