I will update this list continually. All suggestions are welcome.
Chord
A combination of notes played simultaneously.
Key
A key is what you use to unlock something. In playing piano by chords, a key unlocks all the chords that you need for a song.
For instance, the 3 basic chords (I, IV and V chords) in the C key are: C (I), F (IV) and G (V). And if the key were F, then these 3 chords would be: F (I), Bb (IV) and C (V). And of course, being armed with the 3 basic chords, you can also derive the 3 minor chords (II m, III m and VI m), and many other chords in that key.
Octave
Two “doe” notes that are separated by one set of “re”, “me”, “fa”, “so”, “la”, “ti” notes in between.
Scale
A scale simply means a series of notes that comprise the “do”, “re”, “me”, “fa”, “so”, “la”, “ti” notes.
For example, a C major scale is made up of the C, D, E, F, G, A, B notes. That is, when you play these notes one after another in this order: C–D–E–F–G–A–B, you get the do–re–me–fa–so–la–ti sounds. In the same way, an F major scale is made up of F, G, A, Bb, C, D, E notes. That is, when you play F—G—A—Bb—C—D—E, you get the do—re—me—fa—so—la—ti sounds as well, but beginning with the F note.
There are different types of scales, the most common being the major scale and the minor scale. What we have seen above is the major scale. A minor scale differs only slightly from a major scale. The difference is on the 3rd and 6th notes of the scale, i.e., the “me” and the “la” notes. These two notes are flatter in the minor scale than in their corresponding major scale.
For example, a C minor scale is made up of the notes: C, D, Eb, F, G, Ab, B. Similarly, an F minor scale is made up of F, G, Ab, Bb, C, Db, E. Note that when you compare these 2 minor scales with their corresponding major scales above, the 3rd (me) and the 6th (la) notes are flatter (technically speaking, that is referred to as being one “semi-tone” lower).
Transpose
Playing the same song in a different key. It may be a higher or lower key.
[...] hand. This is solely for the purpose of the video shooting. If I were to play my bass notes one octave lower, then I would have to move the camera further in order to capture both of my hands on the [...]
Hey,
I just want to ask, in a minor scale isn’t the 7th note also raised a semitone?
No, I don’t think so. It’s only the 3rd and the 6th note that are lowered a semitone, I believe.