The award recognised the range and breadth of opportunities given to young people by Sound City as well as the partnerships that have been created.
The third SoundCity festival is due to take place on Saturday 14 March.
Brighton and Hove City Council, which runs Sound City through its Music and Arts Service, said: “A core strength is Sound City’s ability to link into the artistic programming across the city to ensure as many young people as possible are involved in as many musical events as possible.
“This partnership is designed to boost music education and opportunities in music that reflect the needs of children and young people.”
The council said: “Working in collaboration, Sound City aims to ensure that all children and young people in the city, whatever their background, are able to engage with, to enjoy and to be inspired by high-quality music opportunities.”
Brighton and Hove Music Trust chairman Councillor Phélim Mac Cafferty said: “The work of Sound City continues to inspire the city’s young people with the power of music.
“This national award affirms the leadership we provide with our work with other key organisations in the pursuit of music making in our city.
“We continue to show that music – whether that’s rock, classical, in a classroom or theatre – makes a marked difference to our young people.
“Music opens doors as well as minds. It really has the power to transform lives.”
The National Music Council, which promotes the cultural and educational benefits of music, awarded Sound City the Diploma of Merit.
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