MUSIC composed by a group of young people who have cerebral palsy and other physical disabilities features in Cerebral Palsy Ireland's second Midsummer Night Concert tomorrow night at 8 p.m. in the Shaw Room of the National Gallery. The young composers' work has been guided by music therapist Jim Cosgrove. Stephen Kavanagh (26) has composed a tribute to his late friend, Peter McMurtry, who took part in last year's music programme but died recently. The Bernardel Ensemble will also perform Good Evening Mr Kreisler, a celebration in words and music of the life and work of the great violinist, Fritz Kreisler. The performers are violinist, Kenneth Rice, pianist Una Hunt, and Petroc Trelawny will narrate. Proceeds from the concert will go towards the (£5 million) cost of building a new school and clinic at CPI, Sandymount, Dublin 4. Tickets are £10 per person and have almost sold out. Tel: 01 2695355.