To celebrate the refurbishment of the Harrison & Harrison organ at King’s, Cambridge, the college’s musical director presents a captivating sequence centred on Bach. Six of his chorale preludes are highly absorbing, not least because Cleobury finds a different registration for each. Franck’s Pièce héroïque mines a deep shaft of basso sonority that contrasts with the prevailing textural delicacy, and indeed deliciousness, of the Bach and a Mendelssohn sonata. The effect is magnificent.