Ellie Goulding's head voice in her cover of "All I Want" by Kodaline. I wasn't expecting much from the cover but DAMN this surprised me. I didn't believe it was her singing this section at first but after checking a live performance I found out it was.
Hold onto these memories, they will hold onto you.
For sheer WTF value, this absolute abomination of an attempt at a Gillan-style wail from a teenage Joey Tempest in 1982. I pitched it at F5, though it's scarcely countable it's so uncontrolled. youtu.be/9NRhvdoQBRQ?t=3m16s
By contrast, for a note that made my jaw drop in awe, here's a Miljenko Matijevic special- a howl that gets up to Bb5 on 'Sheila' from Steelheart's 1990 eponymous debut album. youtu.be/Q8cOnSqcNwk?t=6m53s