3. Do re mi far so la tea do is included in sol feige Pretty much all i know is that it is a major Scale that sounds the same on any note of the piano as long As you use the right notes you always have to use a black Key unless you are doing c major plus they all sound the same Umm yeah

4. Intervals An interval is the distant between one note and another In other words the distance between 2 notes

5. An interval is the distant between one note and another In other words the distance between 2 notes Intervals

6. An interval is the distant between one note and another In other words the distance between 2 notes

7. AA#BCC#DD#EFF#GG#