Alltabs.com has a really good and easy version of Uncle John's Band. It is tabbed out and you will need some guitar chord accompanyment for it to sound just right. Another good source for nontraditional mandolin music is folkpunktabs.com. It has a lot of punk-celtic type stuff, like the pogues and dropkick murphys. Mandolin cafe is also a great source for any information. Oh yeah, with the alltabs you can download a reader, Tef View, that will play the music with or without accompanyment, you can stop it at any time, and you can speed up or slow down. It is very nice. You can actually write your own sheet music with it, as well.
Now if anyone knows where to find either Peggy O or Shady Grove tabs or have tabbed it out I would love you forever if you would share. I know Shady Grove is not a Dead song but Jerry played it a lot with Grisman. Oh yeah, Monkey and the Engineer would be great too. Thanks a lot.http://www.folkpunktabs.com/Mandolin.htm..