Possible Clues:

• Japanese poem form
• One may be written / Just like this clue is written / But a lot better
• Poem read in a Zen garden, perhaps
• Poetry verse form/in which this clue is written/how meta indeed
• Elated murmur, if you're listening to it, here's an example
• Type of Japanese poem
• Only started, Hyperion actually is Keats's unfinished poem
• Poetic form used by Basho
• Evocative verse
• Three-line Japanese verse