You can prepare for the Music Aptitude Tests at Brentwood Ursuline Convent High School by using the following specimen tests that are indicative of the style of test used: http://musicaptitudetest.co.uk/
From the School’s Admissions document: In view of the school’s tradition of excellence in music the governors will admit girls with musical aptitude, up to a maximum of 17 places without undermining the Catholic ethos of the school. Musical aptitude will be determined on the basis of a music aptitude assessment. Priority will be given to those who show the most aptitude on assessment. Additional music training and activities will be provided by the school and these students will be expected to participate in these activities. Music aptitude assessment tests will take place in the Autumn term and you will be informed, before the school application deadline whether your daughter has passed. Please note that a pass does not equate to a guarantee of a place at the school.