Oorspronkelijk: Alfred's Essentials of Music Theory Software, Version 2.0, Volumes 2 & 3. Andrew Surmani. For 05 Computers. 1 Educator, 4 Students.
Vertaling: Alfred's Essentials of Music Theory Software, versie 2.0, Volumes 2. Alfred's Essentials of Music Theory Software, versie 2.0, Volumes 2.