In a piece I am learning the sheet music suggests I should play in one octave, when the piece is performed in a different octave. I need help figuring out the notation.
Consider the following piece of sheet music:
From listening to the piece, I know that bars 4 and 5 repeat bars 2 and 3, but an octave higher. However it is non-obvious to me that this should be the case from the sheet. Bar 4 switches to treble in the left hand, so that is clearly a higher octave. But the right hand notation doesn't change from bars 2 and 3 to bars 4 and 5.
Am I missing something? Or is the sheet ambiguous?