SOPP481: What level of harmony I need to follow the course of Prelude Improvisation Formula?
b'This question was sent by Massimo, and he writes:\\n \\n\\u201cHi Vidas!\\nI have a question about prelude improvisation formula.\\n1. What level of harmony I need to follow the course?\\n2. How many hours a day I need to have a good results?\\nThanks\\nMassimo\\u201d'