ALL MUSIC GUIDE august 2006, James Manheim (answers.com)
PdG is an ideal ensemble countertenor, alternately blending into vertical harmonies and soaring alone.
MUSICWEB-INTERNATIONAL March 05
His emotional involvement in his arias is strong and makes his performances memorable. In 'Von den Stricken' he emphasises 'völlig' (zu heilen) in the B-part. Equally eloquent is the short pause before the closing exclamation 'vollbracht' in the aria 'Es ist vollbracht'.
ZWOLSCHE COURANT January 2004, recital with Brisk Recorder Quartet.
PdG is a very fine alto. Renaissance songs are just his thing! Never boring, always with a with the courage to take risks.
GOOI EN EEMLANDER nov 2003
PdG develops a wonderful velvet sound!
FRIESCH DAGBLAD nov 2002
PDG made deep impression with his moving interpretations of Erlebachs aria’s.
VOLKSKRANT 2001 march 16: St. John’s Passion JS Bach
PdG sang an emotional and moving Es ist vollbracht.
This is first class singing!
GOOI- EN EEMLANDER, Els Boer, 6 mei 1999,
De Groot sings Charpentier with a great deal of impressive pathos.
DE DORDTENAAR, Boudewijn Verhoef, 7 april 1999
The highest praise deserves countertenor PdG. A magnificent voice, sparkling, well balanced, spiritual and with just the perfect tension. His interpretation of the famous Vollbracht aria gave the audience goose bumps.
DE DORDTENAAR, 11 april 1998 De Groot proved how beautiful a countertenor could be in Bachs St. Matthews Passion.
DE MORGEN (Belgium) 20 februari 1998
Contratenor Peter de Groot made a very fine, technical impeccable CD with composer Walter Hus. De Groot brings with easiness and elegance the necessary amount of humour into the poetry.
EMDER ZEITUNG, 11 augustus 1997
Es war beeindruckend zu erleben wie Peter de Groot ein zweistunden Programm meisterte.
(It was impressive to experience how PdG mastered a two hour program.)
DE GELDERLANDER, Ton Verbeeten, 24 februari 1997
The magical sound of his voice led the audience in another world; the world of pure poetry.
TELEGRAAF 1995
The big surprise at Ton Koopmans Weihnachtsoratorio-version: de solo-alto part was replaced by Peter de Groot, a very musical countertenor out of the ranks of Koopmans own Amsterdam Baroque Choir. De Groot is nothing less than a knock-out.
His voice is rich, warm and full of expression.
Countertenors like these are rare!
HEILBRONNER STIMME, Günther Schulz, 23 september 1993
PdG besitzt eine Stimme ohne Brüche in den Lagewechseln, feinste Schattierungen des Ausdrucks, vor allem aber etwas, was man nicht lernen kann: Ausstrahlung (PdG has an immaculate voice, and a palet of the finest nuances in expression, but before everything something one cannot learn: presence! )
WEST-DEUTSCHE ALLGEMEINE Annette Hüls, 8 oktober 1991
Mit Peter de Groot als Schwan (in Carmina Burana) wurde ein erstklassige Solist eingeladen.
(with PdG as the Swann (Carmina Burana) a first class soloist was invited.)
NRC Handelsblad 1990
The entry of Chantecleer (in the Opera Reinaert de Vos by Ruud Bos) is one of the highlights of the performance, wonderfully sung by Peter de Groot.
TROUW 1988
Peter de Groot is a singer of great stature. His coloraturas deserve special mentioning.
VOCAAL 1987
There are but very few altos that I know of that give so much expression to the famous “Vollbracht”-air in Bachs St. Johns passion. It is technically magnificent, splendidly balanced and of a impressive musicality. And what a performers-presence!
This a countertenor of international class!
ARNHEMSE COURANT 1987
De Groot has a beautiful, slim and round voice (…) and displays striking musical and dramatic capacities that enable him to present his message utterly suggestive and tasteful. As a listener one is enthralled from the first moment on listening to him