Oriģināls: Diatonic Theory & Harmony. Composed by Doug Doppler. Guitar sheet music. Diatonic Theory & Harmony. Guitar 411 presents.
Tulkojums: Diatoniska teorija. Ģitāra notis. Diatoniska teorija. Ģitāra. Ģitāra. Pieslēgts Instruments. 2 DVDs. Published by Carisch Edition.