Nicolas Krüger enrolled at the Conservatoire National supérieur de musique de Paris at the age of seventeen, where he was awarded 7 first prizes. He was during the same period vocal coach in many opera houses and more particularly with the Orchestra of Paris, where he regularly assist such conductors as Pierre Boulez, Lorin Maazel, W. Sawallisch, Frans Brüggen, Armin Jordan or Christoph Eschenbach.

Particularly involved in opera, Nicolas Krüger has a wide repertoire in this field. He conduct Les Dialogues des Carmelites by Poulenc at the Antwerpen Opera, La Périchole Carmen and La Traviata at the Opera de Lille, Don Giovanni and Carmen at the Opera de Nice. At the Opera de Toulon, he conducted many productions : Offenbach's Les Brigands, Le nozze di Figaro, Il Barbiere di Siviglia, The Threepenny Opera, La Belle Hélène… At the Opera de Rouen : Pelléas et Mélisande and La Damnation de Faust.
Recently he led a remarkable Medea of Cherubini at the Opera de Dijon, hailed by critics as one of the 10 best productions of the European season. He will be invited there again in the forthcoming season for Pelléas et Mélisande.

This season 2017-2018, he appears at the Opera Comique in Paris (Pelléas et Mélisande, le Comte Ory), at the Opera de Versailles (Comte Ory) and at the Festival d’Aix-en-Provence (Cosi fan Tutte).

In the forthcoming season, he will also make his debut with the Opera de Lyon’s orchestra, and will conduct Faust at the Opera de Limoges and Carmen at the Erfurt summer Festival and in Hong-Kong.

He is guest conductor of the Lille National Orchestra and the Opera Orchestra of Toulon, the Orchestre d'Auvergne, the Orchestre régional de Normandie, the Kammerorchester Köln, the Leipziger Symphonieorchester.

Nicolas Krüger teaches every summer at the prestigious Academy of the Festival d’Aix-en-Provence.

In 2007, Nicolas Krüger won the competition to become associate conductor of the famous BBC Singers in London, with whom he recorded several programs for Radio 3. He was also in charge of the choirs in many productions at the Festival d’Aix-en-Provence, at the Opéra de Paris and at the Opéra de Lyon.

As a pianist, Nicolas appears in recitals with singers such as Salomé Haller, Karen Vourc'h or Jean-Sébastien Bou, and teaches alongside François Leroux for interpretation of French song.

Among his recordings, there includes:
- Das irdishe Leben, which was awarded the Diapason d'or "découverte" prize.
- A recorded version of the music by Chausson, published by zig-zag, including a previously unpublished transcription of the Poème de l'Amour et de la Mer which was highly praised by the press.