this audiobook is not an original version made sejak Rick Riordan/actual publishers, but you'll find it very good. at first, it might sound weird as maybe the spells atau the characters names don't sound as anda thought they would, atau maybe their voices don't.
this recording was originally made sejak rye-n and the original version is available on www.rye-n.com
this one was re-uploaded on YouTube sejak RJODYSSEY. there are many parts of it. each part hold more-or-less half a chapter.
to find: type 'red pyramid' in the cari box and click on the one that says 'the Red Pyramid audiobook part 01)