Which of these intervals is a half step? (1 point) Responses G to A-flat G to A-flat E to F-sharp E to F-sharp C to B-flat C to B-flat all of the above

G to A-flat

A half step is the distance between two adjacent notes, regardless of their letter names.

Among the given responses, only the interval "E to F-sharp" is a half step. So the correct answer is: E to F-sharp.

To determine which of the intervals is a half step, we need to understand what a half step is in music theory. A half step, also known as a semitone, is the smallest interval in Western music.

To find a half step, we need to look at the distance between two adjacent notes on the musical scale. In the Western music system, we have twelve notes in an octave: A, A#/B♭, B, C, C#/D♭, D, D#/E♭, E, F, F#/G♭, G, and G#/A♭.

By looking at the given intervals, we can determine which of them is a half step:

1. G to A-flat: This interval is a half step because it spans a distance of one note from G to G#/A♭.

2. E to F-sharp: This interval is also a half step. Starting from E, we move one note up to F.

3. C to B-flat: This interval is not a half step. It spans a distance of two notes from C to C#/D♭ and then to B♭.

Therefore, the correct answer is:
- G to A-flat
- E to F-sharp

These are the intervals that represent a half step.