Final answer:
A Perfect Fifth above G-flat is D-flat, which is found by counting up seven semitones from G-flat.
Step-by-step explanation:
The Perfect Fifth above G-flat is D-flat. In music theory, a Perfect Fifth is an interval that spans seven semitones. Starting from G-flat, if you count up seven semitones on a standard piano keyboard, you'll arrive at D-flat. This interval is considered perfect because it is one of the most consonant intervals, sounding very stable and harmonious.