Rehearsal: practice and preparation for performance

Common types and their purposes

Rehearsals take several specialized forms depending on the discipline and phase of preparation:

• Dress rehearsal — a full run in costumes and, when practical, in the performance venue. For actors this involves wearing the costumes and running shows at performance speed; for an orchestra it generally means the final full run in the hall without necessarily changing wardrobe.
• Technical rehearsal — focuses on lighting, sound, scenery changes, prop handling and cueing so that technical systems work in concert with performers; lighting cues and timing are a primary concern of a technical rehearsal.
• Sectional or section rehearsals — instrumental groups within an ensemble practise separately so they can address instrument-specific challenges; for example, string instruments will work together to agree on bowing and articulation.
• Open rehearsal — a rehearsal that admits an audience; opera houses and concert halls sometimes stage open rehearsals so the public can watch without paying full ticket price, though performers may "mark" or sing more gently.
• Table read and blocking rehearsal — common in theatre and film, where actors read and then practice movements and stage placement; this early work helps actors and directors, including actors, make interpretive choices.

How rehearsals are organised

Rehearsals are scheduled to move from small-scale work to full ensemble runs. Early sessions often emphasise problem areas, sight-reading, tempo and phrasing. Conductors, directors or choreographers set objectives: short targeted exercises, run-throughs of difficult passages, or complete runs to build stamina and confidence. Musicians use marking—singing or playing at reduced volume—to conserve voices or energy during repetitive rehearsals.

History, development and broader uses

The practice of rehearsing predates modern performance venues; ensemble practice and repetition have long been part of oral and theatrical traditions. Over time, rehearsal techniques have become more specialised as theatre, orchestral and dance practices developed distinct workflows. Rehearsals are also used in education, corporate presentations, and ceremonial drills where repetition reduces error and stress before a public or high-stakes event.

Notable distinctions and practical notes

• Dress rehearsal: final run intended to simulate performance conditions; audiences at some opera houses are sometimes admitted.
• Sectional rehearsals allow focused work on issues like bowing for strings or articulation for wind players.
• Open rehearsals require audience understanding that adjustments or stops may occur; participation can be educational for listeners.
• Technical rehearsals often precede dress rehearsals so lighting, sound and stage mechanics are reliable when performers rehearse full runs.

Whether for a small chamber group or a large-scale musical, rehearsals transform separate elements into a cohesive presentation and remain an indispensable step between preparation and performance.