Key Signatures, Level 1

Explanation
The given answer, "I see flats," is correct because the statement "I see sharps" is not mentioned. The question is asking for the correct answer, and since the only option provided is "I see flats," it is the correct answer by default.

Explanation
When there are flats in the key signature, the second-to-last flat is used to determine where DO is. This means that the second-to-last flat in the key signature will represent the note DO. For example, if there are three flats in the key signature, the second-to-last flat will be the note DO. This rule helps in identifying the tonic or starting note in a piece of music when flats are present in the key signature.

Explanation
When there are sharps in the key signature, the last sharp is used to determine where DO is. This is because the last sharp in the key signature indicates the note that is a half step below DO, which helps establish the tonal center of the key. By using the last sharp, musicians can easily identify the key and play the correct notes in the piece.

Explanation
The explanation for the given correct answer is that when there are sharps in the key signature, the last sharp, or the furthest to the right, is not always DO. In fact, the last sharp in the key signature determines the note that is one half step above it, which is TI. Therefore, the statement is false.

Explanation
The explanation for the given correct answer is that in a key signature with sharps, the last sharp, or the furthest to the right, represents the note TI. This is because the sharps in a key signature are added in a specific order, starting with F#, then adding C#, G#, D#, A#, and E#. The last sharp in the key signature is always the seventh one, which corresponds to the note TI in the solfege system. Therefore, the statement is true.

Explanation
When there are flats in the key signature, the last flat is not always DO. The last flat in the key signature indicates the key of the music, and it may or may not be DO (C). The key signature determines the set of notes that are flat throughout the piece, but it does not necessarily mean that the last flat is DO. The last flat could be any note depending on the key signature.

Explanation
When there are flats in the key signature, the second to last flat is DO. This means that when a piece of music is written in a key signature with flats, the second to last flat in that key signature represents the note "DO" or the tonic of the key. This is a rule that is followed in music theory and helps musicians identify the key of a piece based on the flats in the key signature.

Explanation
The correct answer is "I see sharps in the key signature" because the presence of sharps in the key signature indicates that certain notes in the music are raised by a half step. This is a common way to indicate a specific key in music notation.

Explanation
The correct answer is Line 4. In the treble clef, the lines from bottom to top are E, G, B, D, and F. The 2nd to last flat would be the 4th line, which is the note D.

Explanation
The correct answer is the 2nd space. In the treble clef, the spaces represent the notes F, A, C, and E. Counting from the bottom up, the second space corresponds to the note A. Since the question asks for the line or space number of the last sharp, we can determine that the last sharp is placed on the 2nd space.

Explanation
The correct answers are:
- No flats or sharps in the key signature means DO is C: This is true because in the key of C major, there are no flats or sharps, and the tonic note (DO) is C.
- If there are flats, the 2nd to last flat is DO: This is true because in a key signature with flats, the second-to-last flat indicates the tonic note (DO).
- One flat in the key signature means DO is F: This is true because in the key of F major, there is one flat (Bb), and the tonic note (DO) is F.
- If there are sharps, the last sharp is TI: This is true because in a key signature with sharps, the last sharp indicates the leading tone (TI).