Which mode is represented by using all the white keys from E to E?

The mode represented by using all the white keys from E to E is the Ionian Mode, which is essentially the same as the major scale. When playing from E to E using only the white keys, the notes are E, F#, G#, A, B, C#, and D#, which form the E major scale. The Ionian mode is characterized by its specific pattern of whole and half steps, producing a bright, happy sound commonly associated with major scales.

In this context, the other modes mentioned offer different sequences of whole and half steps. For instance, the Phrygian mode has a different structure that includes a flat second, which would not be found when playing E to E on the white keys. Similarly, the Dorian mode has a whole step between the second and flat third, different from the natural qualities of the white key scale, and the Aeolian mode, or natural minor, deviates from the major quality by introducing flat thirds, sixths, and sevenths.

Understanding the Ionian mode's properties and how it relates specifically to the major scale is essential for recognizing why playing all the white keys from E to E leads to this conclusion.