For those starting a new toon, the 'impossible' quests generally are 'cake' for low levels. i.e. Levels 10-20. Back in the day, it was suicide to do a quest at a low level, but with Blizz's squishing levels and making most zones available to new characters that no longer holds true. It's much easier to get the toughies out of the way at low level than to suffer needless deaths or the pain of finding someone to help later on.
Some toughies 'at level' for Tirigarde Sound are:
Wanted: Gryphon Snatchers - Wanted poster /way #895 66.8 24.5 WANTED: Gryphon 'Nappers
/way #895 66.9 24.4 WANTED: Gryphon 'Nappers
I Can't Hear A Thing - Earless Joe /way #895 51.0 35.8 Earless Joe (The prereq is Save Our Shipmates, a simple breadcrumb quest.)
Wanted: The Hornet - Wanted Poster at Roughneck Camp /way #895 42.2 23.0 WANTED: The Hornet
Wanted: Raging Earthguard - Wanted poster on the Norwington Estate - /way #895 53.1 28.4 WANTED: Raging Earthguard
/way #895 53.1 28.5 WANTED: Raging Earthguard
Goat's Tote - 28 slot bag - Totes is inside a cave. Should be the first stop in the zone. Easy 28 slot bag! - /way #895 46.8 20.4 Totes
/way #895 46.8 20.6 Totes