Hidden Palace Zone

Hidden Palace Zone is a musical track of the game Sonic The Hedgehog 2, initially released in 1992 for the Sega Genesis. Its time signature is most frequently 6/8, beginning in 3/8, and its tempo is 43.75 bpm.

Occurrences
Hidden Palace Zone can be heard in the two Acts of unused Hidden Palace Zone. In prototype versions of Sonic the Hedgehog 2, the Zone was present in normal play, so the track was not unused.

In the finished Genesis release, the Zone is only accessible through cheats.

In the iOS release, the Zone is present but only has one Act, has an unique boss, is secretly accessed by falling in a pit in Mystic Cave Zone Act 2, and its music is Mystic Cave Zone 2P. Still, the track Hidden Palace Zone can be heard in the variant of Hidden Palace Zone, Proto Palace Zone—accessed through the Level Select menu by entering the Sound Test sequence 03, 03, 03, 0B, 10, 10, 10, and 04 and selecting Hidden Palace.

The track can be made play in the Sound Test in both finished releases.