Random Riddle: Help Beethoven

Example: A Triad of Monarchs
Answer: We Three Kings

1. Sir Lancelot with laryngitis.
2. Frozen precipitation commences.
3. Oh, member of the round table with missing areas.
4. I envisioned a trio of marine vessels.
5. Do you perceive the same longitudinal pressure that stimulates my auditory sense organs?
6. Leave and do a broadcast on an elevated peak.