The work of a collaborative pianist and vocal coach is known by different names depending on traditions and contexts: collaborative pianist, répétiteur, chef de chant, Korrepetitor, maestro collaboratore, maestro sostituto.
Beyond definitions, it is a complex profession that combines musical, linguistic and human skills, and unfolds primarily in rehearsal, preparation and production contexts.
This role does not coincide with that of a singing teacher or a solo pianist. It is a form of musical support that serves the singer and the operatic work itself, offering structure, clarity and artistic grounding throughout the preparation process.

Rehearsal and preparation
The foundation of this work is musical precision: the right notes at the right time.
Rhythm, intonation, agogics, phrasing and style form the basis upon which interpretation can develop.
The collaborative pianist supports singers in learning and preparing roles, helping them navigate the score, understand musical structure and build continuity and coherence in the musical discourse.
Text, language and pronunciation
In opera, diction is never an accessory element.
Pronunciation, prosody, stress and meaning are integral parts of the musical writing.
A pianist working in opera cannot meaningfully address diction in a language they do not actively practice. Text is not only phonetics: it is rhythm, colour, articulation and expression.
Many musical difficulties find their solution through careful work on the text, rather than through direct intervention on the voice.
Working with the voice
Vocal coaching is not the same as teaching singing.
Work on the voice takes place within the music itself, often through solutions already embedded in the score.
Although I have direct experience as a former opera singer, technical vocal advice is offered only when explicitly requested. The voice is a complex and deeply personal instrument, and every artistic path requires respect, time and mutual understanding.
Like an orchestra
At certain stages of preparation, singers need to work through entire roles in order to understand their limits and fully internalise the music.
In these moments, the pianist becomes a musical guide through sound alone.
Part of this work involves suggesting orchestral colours at the piano, transforming the reduction into a living and inspiring musical space.
The piano as a working tool
In opera, the piano is never an end in itself, but a means.
The piano score is not definitive: it is a reduction that often needs to be adapted, simplified or rethought in order to serve the singer effectively.
Collaborative pianists constantly reshape the written score, seeking clarity and functionality rather than literal reproduction.
The guiding principle is not "play what you see", but "play what you hear."
Reading, memory and adaptability
Strong sight-reading skills are essential in operatic work, where the repertoire is extensive and demanding.
Fluent reading allows large amounts of musical material to be absorbed quickly and enables flexibility in unexpected situations, such as last-minute auditions or rehearsals.
The ability to sing vocal lines while playing is an integral part of this profession, as is adaptability when working with singers, conductors and stage directors in different artistic contexts.
The human and psychological dimension
The voice is deeply connected to personal identity.
For this reason, empathy, patience and care are fundamental aspects of the work.
A calm and focused rehearsal environment is essential for both singing and music-making. Creating a space that combines rigour with ease allows singers to work with confidence, concentration and expressive freedom.
The work of the collaborative pianist often takes place behind the scenes, yet it plays a decisive role in the solidity and quality of a performance.
For professional enquiries and collaborations:
toomas.kaldaru@operacoach.it
