Maestra: Strings of Truth

Maestra: Strings of Truth is a South Korean television series starring Lee Young-ae, Lee Moo-saeng, Kim Young-jae, and Hwang Bo-reum-byeol. Based on the French TV series titled Philharmonia, it is about the struggles and growth of one of the only 5% female conductors in the world. It aired on tvN from December 9, 2023 to January 14, 2024, every Saturday and Sunday at 21:20 (KST). It is also available for streaming on TVING in South Korea, and on Disney+ in selected regions.

Synopsis
The series is about a secretive female conductor who faces the truth surrounding her by digging into the mysterious incidents that happen within her orchestra.

Main

 * Lee Young-ae as Cha Se-eum: a former violinist and a world-renowned conductor of an orchestra named The Hangang Philharmonic, who fascinates performers and audience members with her bold and determined personality.
 * Woo Da-bi as young Cha Se-eum
 * Lee Moo-saeng as Yoo Jung-jae: Se-eum's ex-lover who is an investment tycoon and the chairman of UC Financial.
 * Lim Sung-kyun as young Yoo Jung-jae
 * Hwang Bo-reum-byeol as Lee Ru-na: a violinist and the youngest concertmaster of The Hangang Philharmonic.
 * Kim Young-jae as Kim Pil: Se-eum's overly dependent husband who seems to be affectionate and considerate, but feels inferior to his wife due to her success.
 * Jin Geon-woo as young Kim Pil

People around Cha Se-eum

 * Jung Dong-hwan as Cha Ki-baek: Se-eum's father who is a musical instrument maker.
 * Ye Soo-jung as Bae Jeong-hwa: Se-eum's mother who is a former violinist.
 * Kim Young-ah as Lee Hye-jeong: best friend and workshop manager of Se-eum.
 * Kang Ji-eun as Woo Young-seon: Jeong-hwa's doctor.

People around Yoo Jung-jae

 * Choi Yun-so as Go Yu-ra: the director of KVN Broadcasting Station and Jung-jae's ex-wife.
 * Kim Hyun-jun as Go Han-gil: Jung-jae's long-time friend and Yu-ra's older brother.
 * as Secretary Park: Jung-jae's secretary.

The Hangang Philharmonic

 * Park Ho-san as Jeon Sang-do: the cheerful and quick-witted CEO of The Hangang Philharmonic.
 * Yang Jun-mo as Ma Yo-seop: a timpanist and the orchestra's union leader.
 * Jin Ho-eun as Kim Bong-ju: the principal oboist.
 * Lee Jung-yeol as Park Jae-man: a concertmaster and the oldest member of The Hangang Philharmonic.
 * Lee Si-won as Lee Ah-jin: a horn player.
 * Kim Min-kyu as Kim Tae-ho: Se-eum's secretary and her long-time fan.
 * Jin So-yeon as Kwon Su-jin: an associate concertmaster.
 * Jung Seon-ah as Heo Young-mi: the principal second violinist.
 * Min A-ram as Shin Ji-ae: assistant principal second violinist.
 * Han Jin-hee as Kang In-han: the principal first violinist.
 * Hwang Geon as Novaha: the principal cellist.
 * Lee Byung-joon as Oh Hyun-seok: the assistant conductor.
 * Lim Se-joo as Chief Hwang: Sang-do's secretary.

Others

 * as Lee Hae-na: Ru-na's older sister.
 * Baek Sung-cheol as Chu Dong-sik: a detective.
 * as Baek Joo-won: a detective.

Production
Filming began soon after the first script reading of the cast, which was held at the end of February 2023. Lee Young-ae started learning conducting and playing violin from November 2022, while Hwang Bo-reum-byeol practiced playing violin for about eight months.

Filming of the series had completed by November 1, 2023.

In July 2023, production company RaemongRaein announced that it had signed a supply contract with Studio Dragon for the production of the series worth 17.5 billion won.