The First Jam series was created to give children and beginners of all ages a book of simple, common tunes to learn. These are standard "Jam" tunes in the Bluegrass/Old Time music styles. All the books in this series are written in the same keys; they can all be played together without any problems. So get your friends or family who play guitar, mandolin, banjo, ukulele, dulcimer or Dobro together, grab these books..