W hat do Johann Stamitz, born in Bohemia in the 18th century, and Guido López Gavilán, born in Cuba at the end of the 20th century, have in common? These two composers are part of the musical world of Cosette Justo Valdés, a dynamic young conductor who was trained at the Havana Conservatory and is now Assistant Conductor of the Edmonton Symphony Orchestra. The concert also includes pieces by Polish composer Witold Lutoslawski and Bohemian composer Josef Suk, a student of Dvořák. Cosette Justo Valdés makes her Montreal debut with a journey through contrasting styles under European and Caribbean skies.

Thursday April 29 2021, 4pm

Webcast live

Webcast live and replay of the concert at St. Jax Church in Montreal from April 29 at 8:30 p.m. to Friday, May 7 at midnight.


Ticket price : 20$ taxes included

Update COVID-19 – October 2020 
With the health of our musicians and our audience at heart, and according to the current restrictions issued by Public Health, tickets on sale for St. Jax Church are only available for webcasting at this time.


Johann Stamitz (1717-1757)

Sinfonia (Mannheim) op. 3 n°2 en la majeur

    1. Presto
    2. Andantino
    3. Menuetto-trio
    4. Prestissimo


Witold Lutosławski (1913-1994)

Overture for Strings (1949)


Josef Suk (1874-1935)

Serenade op.6 en mi bémol majeur

    1. Andante con moto
    2. Allegro ma non troppo e grazioso
    3. Adagio
    4. Allegro giocoso, ma non troppo presto

Guido López Gavilán (né en 1944)

Camerata en Guaguancó


Jorge López Marín (né en 1949)

El médico de pianos

Julie Triquet plays a Giuseppe Odoardi 1726 violin generously loaned by Mr. David B. Sela.
Amélie Benoit Bastien plays a Nicolas Vuillaume 1850 violin and a bow by Sartory generously loaned by CANIMEX.
Annie Guénette plays a Joseph Gagliano 1768 violin and a bow by Lamy generously loaned by CANIMEX.
Tim Halliday plays a Mira Gruszowand Gideon Baumblatt’s Kolia cello (2014), generously loaned by Mr. David B. Sela.   

Marieve Bock plays a Maucotel Paris 1849 cello generously loaned by CANIMEX.


Cosette Justo Valdés

Guest conductor


Cosette Justo Valdés was born and raised in Cuba. A daughter of amateur musicians, she’s loved music all of her life, and she began learning piano and music theory from age 8. At 18 she saw a symphony orchestra perform live for the first time in her life and she immediately knew she wanted to be a conductor. She took up conducting in 2002 at the National Institute of the Arts of Cuba, in Havana, with Mtro. Jorge López Marín, and after graduating in 2009 with a Bachelor’s Degree in Orchestral Conducting, she was appointed Music & Artistic Director of the Orquesta Sinfónica de Oriente (OSO) (Santiago, Cuba), Cuba’s second-most important orchestra.


During her first three years at the OSO, Cosette organized and conducted numerous concerts of a broad repertoire of classical, jazz, pop, and traditional Cuban music, which allowed her to start consolidating her foundation as a conductor. She also developed several programs for improving the technical and musical level of the orchestra, and founded a Kid’s Orchestra and a Youth Orchestra, both tutored by the musicians of the professional orchestra.


With Cuba’s OSO, Cosette conducted premières for some of Cuba’s best known composers.  She also performed the Cuban première of Domenico Scarlatti’s intermezzo La Dirindina, including designing the costumes, sets, super-titles and directing the overall artistic production.


In 2012, Cosette entered the Mannheim Staatliche Hochschule für Musik und Darstellende Kunst (State University for Music & Performing Arts) in Germany, earning her Master’s Degree under the mentorship of Mtro. Klaus Arp. In Europe she conducted many orchestral, choral, and chamber ensembles, while remaining Music & Artistic Director of the OSO in Cuba and returning often to conduct it.


Her passion for 20th century music inspired her to conduct a performance of Dmitri Shostakovich’s Symphony No. 1 with the National Orchestra of Cuba in La Habana for the first time in more than 30 years. She also organized several large projects combining the forces of the two major symphonic orchestras of Eastern Cuba.


Cosette also brought to the OSO for the first time pieces like Shostakovich’s Symphonies Nos. 1 and 5, Symphony No. 1 by Robert Schumann, Symphony No. 5 by Felix Mendelssohn, Pulcinella Suite by Igor Stravinsky, The Unanswered Question by Charles Ives, and others.


Cosette conducted the OSO for the CD “Popularmente Sinfónico”, and guest-conducted several other CD recordings in Cuba. She organized the project “SinfóniJazz” which had its first performance in December 2016 at the International Jazz Festival in La Habana. For it, she commissioned music from some of the best young jazz payers and composers in Cuba. The National Symphony Orchestra of Cuba performed the première of this project, which was a great success.


Cosette started in January 2019 in her position as Assistant Conductor and Community Ambassador of the Edmonton Symphony Orchestra. In Edmonton she has been conducting a vast amount of concerts with the ESO. She also will be guest conducting in Calgary, as well as in Cuba, Germany, USA and other countries. In January 2021 she will make her opera debut in Edmonton with Mozart’s opera Così fan tutte.