who plays the first theme in eroica the first time

In the first movement of Beethoven’s Eroica symphony, the very first theme isn’t played by a single instrument. It’s introduced by the cellos.

Here’s a breakdown of the introduction:

1. Two “guillotine strokes” – This refers to two loud E♭ chords played by the entire orchestra.
2. Cellos take the lead: The cellos play the first nine notes of the main theme, establishing the melody.
3. A twist with the C♯: The cellos then descend to a surprising C♯, a note not part of the main key (E♭ major). This unexpected note creates a sense of tension and disruption.