Chatteris sisters Bonnie and Rosie Scott picked up the Emile Lewis Rose bowl for the harp ensemble class in the Cambridge Competitive Music Festival.
The Witchford Village College and Lionel Walden Primary School students received top marks out of the entire harp classes.
They have also competed in the Peterborough Music Festival and won the duet class receiving distinction standard.
Rosie also won distinction for her violin playing individually and Bonnie a distinction for her individual harp class.
Earlier last month they came back with medals from the East Anglian Harp Festival where both girls won trophies.
In the summer the girls will be running a harpathon charity day to raise awareness and funds during Diabetes Week in the Grafton Centre in Cambridge on June 20.
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