If you are referring to the Prelude and Fugue no 1 in C major that opens The Well Tempered Clavier I it is in C Major.
6. Each has a prelude, allemande, sarabande, gigue and intermezzi. 1. in G major 2. in d minor 3. in c major 4. in e flat major 5. in d major 6. in c minor
It is in the key of d minor (1 flat-b).
F major because it only has B flat in its scale.
Typically, the note of the scale that you are on will be the chord that you play. 1 major 2 minor 3 minor 4 major 5 dominant seventh 6 minor 7 diminished
Suite for Solo Cello No. 1 in G Major: I. Prelude
Ave Maria
6. Each has a prelude, allemande, sarabande, gigue and intermezzi. 1. in G major 2. in d minor 3. in c major 4. in e flat major 5. in d major 6. in c minor
Major Key: F Major Minor Key: D Minor
Bach Prelude No. 1 in C major BWV846
C major (no sharps or flats)Sharp Keys:G Major/E minor (1 sharp)D Major/B minor (2 sharps)A Major/F-sharp minor (3 sharps)E Major/C-sharp minor (4 sharps)B Major/G-sharp minor (5 sharps)F-sharp Major/D-sharp minor (6 sharps)C-sharp Major/A-sharp minor (7 sharps)Flat Keys:F Major/D minor (1 flat)B-flat Major/G minor (2 flats)E-flat Major/C minor (3 flats)A-flat Major/F minor (4 flats)D-flat Major/B-flat minor (5 flats)G-flat Major/E-flat minor (6 flats)C-flat Major/A-flat minor (7 flats)These are all the possible keys you can write in, enharmonic keys are italicised.
It is in the key of d minor (1 flat-b).
A key signature is the placement of sharps or flats at the beginning of a piece of music which determines what the key of a song is and unlike the time signature it is repeated every line; here is a list of all the possible keys you can write in:C Major/a minor (no sharps and no flats)Sharp Keys:G Major/e minor (1 sharp)D Major/b minor (2 sharps)A Major/f♯minor (3 sharps)E Major/c♯minor (4 sharps)B Major/g♯ minor (5 sharps)F♯ Major/d♯ minor (6 sharps)C♯ Major/a♯ minor (7 sharps)Flat Keys:F Major/d minor (1 flat)Bb Major/g minor (2 flats)Eb Major/c minor (3 flats)Ab Major/f minor (4 flats)Db Major/bb minor (5 flats)Gb Major/eb minor (6 flats)Cb Major/ab minor (7 flats)
Orion is 1. Ursa Major and Minor are also some.
There are a total of fifteen keys in Western music. Keys come with two forms, sharp keys and flat keys and one comes with all naturals. The complete list of major keys are shown below: C major (or A minor) - no sharps/flats G major (E minor) - 1 sharp D major (B minor) - 2 sharps A major (F-sharp minor) - 3 sharps E major (C-sharp minor) - 4 sharps B major (G-sharp minor) - 5 sharps F-sharp major (D-sharp minor) - 6 sharps C-sharp major (A-sharp minor) - 7 sharps F major (D minor) - 1 flat B-flat major (G minor) - 2 flats E-flat major (C minor) - 3 flats A-flat major (F minor) - 4 flats D-flat major (B-flat minor) - 5 flats G-flat major (E-flat minor) - 6 flats C-flat major (A-flat minor) -7 flats There you go, those are all the different keys you can write in!
F major because it only has B flat in its scale.
Typically, the note of the scale that you are on will be the chord that you play. 1 major 2 minor 3 minor 4 major 5 dominant seventh 6 minor 7 diminished
Prelude to Bach's Solo Cello Suite No 1 in G major