Musical instrument with keyboard

A system for teaching the playing of music including a keyboard for a musical instrument based on a twelve note per octave scale having keys on at least two playing rows, including a front playing row and a rear playing row, wherein the front playing row includes keys for the notes "D.music-flat.", "E.music-flat.", "F", "G", "A", "B" and the rear playing row includes keys for the notes "G.music-flat.", "A.music-flat.", "B.music-flat.", "C", "D", "E", and wherein the keys "F", "G", "A", "B", "C", "D", "E" are formed from a first material and the keys "D.music-flat.", "E.music-flat.", "G.music-flat.", "A.music-flat.", "B.music-flat." are formed from a second material which is clearly distinguished from the first material;

• and further comprising:
• a musical score having a staff formed from five parallel horizontal lines corresponding to the rear keyboard keys "E", "G.music-flat." , "A.music-flat.", "B.music-flat.", and "C", respectively, beginning with the bottommost connected parallel line to the topmost parallel line, said five parallel lines defining four equal spaces between adjacent lines and corresponding to the front keyboard keys "F", "G", "A", "B", respectively beginning with the bottommost space to the topmost space, the five parallel lines being connected and intersected by lines perpendicular thereto for defining measures;
• with the front keyboard key "E.music-flat." corresponding to a space beneath the bottommost parallel connected line;
• with the rear keyboard key "D" corresponding to a further line D provided parallel to but separated from the five parallel lines by a further space of equal size of the spaces defined by the five connected lines, but the line D being unconnected to the five parallel connected lines;
• and, with the front keyboard key "C.music-sharp." corresponding to a space above the topmost parallel connected line.