Possible Clues:

• Quaint bird without its tail -- it gives out high-frequency sounds
• Speaker has little cutting to say w hen leader is aw ay
• One relaying notes with high frequency?
• Poster of short message — little bird?
• Piece of hi-fi equipment was first used in rock
• Bird coming from wet tree?
• Speaker, one making birdlike noises?
• Chirpy type highly effective in reproducing sound
• Loudspeaker for playing high-frequency sounds
• Small speaker