Every note is a recording.
A real concert flute, recorded in a room with a soft vibrato, from middle C up three octaves to the high C. Every recording was measured and tuned to the exact pitch, and each note lasts about one breath.

A real concert flute with a gentle vibrato, from middle C up to the very top, tuned note by note.
No MIDI keyboard? Play with your computer keys: bottom rows are the lower octave, top rows the higher one. Hold Shift to sustain. ← → octave, ↑ ↓ semitone.
Virtual flute
A real concert flute, recorded in a room with a soft vibrato, from middle C up three octaves to the high C. Every recording was measured and tuned to the exact pitch, and each note lasts about one breath.
On a velocity-sensitive MIDI keyboard, a normal touch plays the gentle vibrato note and a hard hit switches to the flute played loud and straight, with more air in it. The arrow keys move the letter keys up and down its range.
No app, no plugin and no account. Play a melody, record it, and save it as a WAV that is made right here on your own device.