"School Music Festival Recruitment of Musical Talents" can be expressed as "School Music Festival Hiring of Musicians".

This phrase is commonly used in the context of a school organizing a music festival and looking to hire talented musicians to perform at the event. It's a straightforward and clear way to express the purpose of the recruitment.

Examples:

"The School Music Festival is now accepting apppcations for musical talents to perform on the main stage."
"If you're a talented musician, don't miss the chance to showcase your skills at the School Music Festival."

Translations:

"学校音乐节现在正在招聘音乐人才在主舞台上表演。"
"如果你是一位有才华的音乐人，不要错过在学校音乐节展示你的技巧的机会。"