‘I cannot recommend this issue too highly’ (Gramophone)

‘The Delmé Quartet … have the utmost cause for self-congratulation on this virtually faultless committal of their titanic progeny to disc’ (Tempo)

‘A ceaseless torrent, or stream, of pure invention; and if you ask me how that can be – a torrent which 32 times reverses direction and then flows backwards – I can only reply that this is one of the many mysteries of our mysterious musical world, and that it is so’ (The Sunday Times)

‘A marvellous work of our time’ (The Daily Telegraph)

‘One of the most extraordinary quartets ever written. No less superb is the playing of the Delmé Quartet whose remarkable dedication and musical skill is faultless’ (Morning Star)

‘All of Robert Simpson's quartets are worth hearing. Don't ask for a recommendation of where to start! But do start, somewhere’ (Fanfare, USA)

‘Superbly done by the Delmé Quartet’ (The Guardian)

‘Fans of the composer, and all those who care about the continuance of the string quartet tradition, needn't hold back. These issues are self-recommending’ (CDReview)

‘When it comes to recordings of British string quartets there've been few more impressive achievements than Hyperion's Robert Simpson cycle’ (BBC Record Review)

‘It is this writer's unshakeable conviction that Simpson is probably today's greatest living exponent of absolute music anywhere in the world … if you haven't yet come to terms with Simpson, there's an enormous gap in your apprehension of 20th-century music’ (Fanfare, USA)

‘Played grippingly by the Coull Quartet’ (The New York Times)

‘Superbly focused readings, recorded with the utmost presence’ (The Independent)