It is only as of 1993 that he began playing the double bass (classes at the Conservatoire in Paris and through training courses with Jean François Jenny Clark et Eddie Gomez). He won the silver medal at the Concours International de Contrebasse de Capbreton in the summer 1999.
After having lived in Nancy, he settles in Paris in 2000 and takes part in many musical groups. He was a member of the Orchestre Régional de Jazz en Lorraine from 1992 to 2000. He collaborated with the Paris Jazz Big Band (PJBB) created by Pierre Bertrand et Nicolas Folmer. He was a journalist for Bass & Drums et Guitare & Bass. He also participated in classical concerts with the Orchestre de Massy, the Orchestre Philharmonique de Lorraine and the Orchestre Colonne. He can also be heard playing with musicians such as : Sylvain Beuf, Archie Shepp, , Alex Tassel, Antonio Farao, Sara Lazarus, Jean-Michel Pilc, Franck Agulhon, Flavio Boltro, Pierre de Bethmann, Guillaume de Chassy, Aldo Romano, Rosario Giuliani, Franck Avitabile, Stephane Huchard, Alain Jean-Marie, Sylvain Luc, Michael Felberbaum, Olivier Ker Ourio, Baptiste Trotignon, Elisabeth Kontomanou...
He now plays regularly with Bireli Lagrène, Andre Ceccarelli, Didier Lockwood, Philip Catherine or David Linx.
Leader of his own Quartet since 2008 ( with David El-Malek-Sax, Alex Tassel-Fluegelhorn and Franck Agulhon-Drums), he has recorded two CDs with this outstanding band « A l’ombre du saule pleureur »(2009) et « Next Move » (2011). Their third album, «Colors» will be released in spring 2015.
The musical orientation that this group experiments with since 2008 as their many concerts took place, lead Diego Imbert to write a new repertoire  in which interaction, reactivity and melodies are at the center of the collective discourse. Diego’s main influences in writing are Wayne Shorter and Dave Holland.
He is also coleading a duet with the guitarist Michel Perez and they released their first CD in 2013, «Double Entente». He also wrote a classical/contemporary Concerto for DoubleBass, Clarinet and String Quartet. This Sextuor will record in 2015.
Holder of a teaching degree in jazz, he taught at the Centre Musical et Créatif de Nancy (CMCN) and then, as of 1991, at the Music Academy Institute (MAI), at the Centre Musical Didier Lockwood (CMDL) and at the Troyes Conservatory. For the latter he ran classes, workshops, seminars, master-classes and summer training courses. He also taught for many other jazz training courses (Trier, Lisieux, Semur en Auxois, Granville).
For the contemporary dance company « La Compagnie du Ruisseau », he composed and played the music for the performance “Marmonie” and created the musical score for « l’Ombre d’un doute”. He also works with a Theatre Compagny (Tearto) for which he wrote and performed several Music.