What type of ensemble performed "Dies irae"?

The "Dies irae" is a traditional Latin hymn that is often associated with the Requiem Mass in the Christian liturgical context. It is a powerful and dramatic piece that typically calls for both vocal and instrumental components to convey its emotional depth and thematic weight.

When performed by an orchestra and chorus together, the combination enhances the overall impact of the work, allowing for a rich, layered texture. The orchestra provides the instrumental backdrop, creating a dramatic atmosphere, while the chorus delivers the vocal lines, often featuring text that reflects themes of judgment and mortality. This collaboration between the two forces is particularly common in the context of requiems and similar choral works, making the performance by both orchestra and chorus the most fitting choice for this piece.

The other options do not fully embrace the traditional and commonly accepted format of "Dies irae" as it is typically arranged and performed in a concert setting. Solo performances or those limited to only one type of ensemble would miss the full expressive potential that comes from the collaborative effort of a chorus accompanied by an orchestra.