Webern: Symphonie op. 21, movement 1, opening

This opening passage is a double canon in inversion. The dux is the leading voice; the comes follows. Keys 1–4 trace the four voices across instruments. Keys 5–9 compare five paired blocks in the first canon, retaining its red and green colours. Selecting a pair opens its first page if none of it is on the current page. The bar ranges and page locations appear below the controls; some pairs continue onto another page.

Key 0 highlights the sounding pitch classes A and E♭, including their spellings in the transposing instruments (all notes shown here at sounding pitch). This part of the analysis draws attention to the pitch symmetry around (sounding) A3.

Use ←/→ for pages, Ctrl + ←/Ctrl + → for first/last page, +/− for zoom, and Esc to clear highlighting. On a narrow screen, scroll the score sideways.

The voice assignments preserve the original tutorial analysis. Its horn-2 note in bar 25 is outside the four highlighted voices. Assignments follow the named instruments and numbered bars; review them after inserting bars, moving material between parts, or changing the musical structure.

The hosted page loads Webern-Symphonie.mei from the same folder automatically. You can also choose a file here if you prefer (... any score as long as it's this one ;) ... ). Internet access is needed to load the notation engine.

python3 -m http.server 8000 --bind 127.0.0.1