any particular song which he composed on it?
Remember Us and Returns a King
300 (film)
. "Remember Us," from "300", is identical in parts to the "Finale" from "Titus", and "Returns a King" is similar to the cue "Victorius Titus". 
who played the hunchback in the movie 300 Ephialtes who composed the soundtrack for it? Tyler Bates
wiki:23778068
300 (film) [SEP] Soundtrack
The score has caused some controversy in the film composer community, garnering criticism for its striking similarity to several other recent soundtracks, including James Horner and Gabriel Yared's work for the film "Troy". The heaviest borrowings are said to be from Elliot Goldenthal's 1999 score for "Titus". "Remember Us," from "300", is identical in parts to the "Finale" from "Titus", and "Returns a King" is similar to the cue "Victorius Titus". On August 3, 2007, Warner Bros. Pictures acknowledged in an official statement: