More like The Oathbound Wizard

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Tolkien's legendariumUniverse
universe163 books1923
Fantasy, set in secondary world.
“Before the seas were bent and the mountains raised, there was Music — and from that Music came Arda, and in the west of Middle-earth the long defeat and stubborn hope of those who dwell there.”
from the catalogue
Start with The Fellowship of the Ring →
includes The Hobbit, The Lord of the Rings, The History of Middle Earth, The Fall of Gondolin, The History of the Lord of the Rings
NarniaUniverse
universe38 books1950
“Once there is a wardrobe at the back of a spare room, and behind the fur coats the wood gives way to snow, and a lamp-post burns alone among the trees.”
from the catalogue
Start with The Lion, the Witch and the Wardrobe →
includes Narnia, Narnia Solo Adventures
SpellsingerSeries
series9 books1983
About quests and music.
“Alan Dean Foster's Spellsinger series follows Jon-Tom, a UCLA law student pulled into a fantasy world by the wizard Clothahump, where he discovers he can cast spells by singing along with his guitar.”
from the catalogue
Start with Spellsinger →
A Wizard in RhymeSeries
series8 books1986
completed
Fantasy and portal fantasy, adventurous in tone, about wizards and transported to another world, set in secondary world.
“Matt Mantrell is an English major who gets transported to a different world where magic works by rhyme.”
from the catalogue
Start with Her Majesty's Wizard →
The Princess BrideNovel
William Goldmanstandalone novel1973
Romance and adventure, about quests.
Mordant's NeedSeries
series2 books1986
Fantasy and portal fantasy, adventurous in tone, about political intrigue, set in secondary world.
Start with The Mirror of Her Dreams →