Hello. I cloned API source and compile myself to get updated my plugins. I know that Sound enum has changed, and while I updating that code I found that some sounds are not in the new API
Bukkit 1.8:

• NOTE_BASS,
• NOTE_PIANO,
• NOTE_BASS_DRUM,
• NOTE_STICKS,
• NOTE_BASS_GUITAR,
• NOTE_SNARE_DRUM,
• NOTE_PLING,
  Bukkit 1.9:
• BLOCK_NOTE_BASEDRUM,
• BLOCK_NOTE_BASS,
• BLOCK_NOTE_HARP,
• BLOCK_NOTE_HAT,
• BLOCK_NOTE_SNARE,

But on Prerelease-2 noteblocks works fine with all the sounds (tested on singleplayer, not API or a modded server)