# BIRDS OF A FEATHER by Billie Eilish

Source: https://pitchhighway.com/songs/billie-eilish-birds-of-a-feather
Site: PitchHighway — learn to sing your favorite songs (https://pitchhighway.com)

---

## Measured data

- Key: E major
- Vocal phrasing tempo: ~102 BPM (median pace of the sung phrases, measured from real uploads — it can sit below the song's beat BPM on sustained passages)
- Vocal range: A3–D5 (17 semitones)
- Tessitura (middle 50% of sung time): E4–G4
- Longest note: F#4 held 3.8s
- Difficulty: medium
- Range fit: fits inside 50% of the 4040 vocal ranges measured on PitchHighway (whole-octave shift allowed)

---

## BIRDS OF A FEATHER key and vocal range

Billie Eilish’s “BIRDS OF A FEATHER” is in E major in the original recording. This page covers the song’s key, measured vocal range, difficulty, and ways to practice its melody. The measured vocal line spans A3 to D5, with most of it sitting between E4 and G4. Its phrasing tempo is about 102 BPM, and the measured difficulty is medium.

Those figures help singers plan the work. The full range covers more than an octave, but the central E4–G4 area gives a better picture of where much of the singing sits. The top note reaches D5, while the bottom reaches A3. Your experience will depend on where those notes fall in your own voice and how comfortably you move between registers.

## What makes it easy or hard to sing

The medium difficulty rating reflects a song that asks for more than staying within a narrow group of pitches. Its A3–D5 range moves from the lower part of the measured line to notes above the main E4–G4 tessitura. A singer may find the center comfortable but need to plan the shift toward D5, especially if the upper notes feel close to the edge of their easy range.

The phrasing tempo of about 102 BPM gives the melody a steady, moderately brisk pulse. That pace leaves less room to pause and reset than a slow ballad, so practice should focus on entering each phrase on time and keeping the melody moving without rushing. The measured longest note lasts 3.8 seconds, a sustained note that calls for a steady stream of air and an even tone. Rather than pushing more breath at the start, aim to release air gradually and keep the vowel stable through the note.

A useful approach is to separate pitch movement from full-song delivery. First, sing short sections at an easy volume and identify where the line rises out of the E4–G4 area. Then repeat those transitions slowly enough to keep the pitch clear, before returning to the song’s regular pulse. If D5 feels strained, don’t force it; try a lower key or a lighter production while you build familiarity with the passage.

## Who it suits

The measured range and tessitura may suit many mezzo-sopranos and lighter altos, particularly singers who feel comfortable around E4–G4 and can reach D5 without pressing. Some tenors may also find the central notes accessible, though the upper part of the range may require a different register strategy. These are starting points, not strict voice-type rules: vocal labels describe broad patterns, and individual comfortable ranges vary.

The A3 low note also matters. Singers who are used to high melodies should check that the lower phrases remain clear and supported rather than fading into a breathy sound. A singer whose natural range sits lower may prefer to transpose the song. Conversely, a singer who can reach D5 but feels tension there can try a lighter approach instead of trying to match the recording’s color by adding volume.

## How to practice it

Start by singing the measured A3–D5 span as separate, comfortable pitches, then locate the E4–G4 area where most of the line sits. This gives you a quick check of which notes feel settled and which need attention. Work through the melody in short phrases, keeping the 102 BPM pulse with a metronome or the recording. Repeat any register transition on its own, then connect it to the phrase before and after so it feels like part of the melody rather than a jump to solve in isolation.

For the 3.8-second sustained note, take a quiet breath before the phrase and practice holding the pitch at a moderate volume. Keep your jaw relaxed and avoid letting the final part of the note sag. Once the line feels steady, sing the full phrase at the song’s tempo and notice whether the held note leaves enough breath for what follows. Upload the song to PitchHighway and learn it phrase by phrase.