All of the free melodies and backing tracks were played by me at home with my family and dog running about, and each track was played straight through, so I accept all responsibility for any strange noises or mistakes you hear during the recordings! :-)
Also, to make these tunes available in 5 different keys, and at 6 speeds each, I played each of them once in the key of G Major, and once in the key of C Major, and then I used "Amazing Slow Downer" software to change the speeds and keys of the tracks.
Picking Melodies Vol. 1 Workbook