Melba made numerous gramophone (phonograph) records of her voice in England and America between 1904 (when she was already in her 40s) and 1926 for the Gramophone & Typewriter Company and the Victor Talking Machine Company. Most of these recordings, consisting of operatic arias, duets and ensemble pieces and songs, have been re-released on CD. The poor audio fidelity of the Melba recordings reflects the limitations of the early days of commercial sound recording. Melba's acoustical recordings (especially those made after her initial 1904 session) fail to capture vital overtones to the voice, leaving it without the body and warmth it possessed – albeit to a limited degree – in life. Despite this, they still reveal Melba to have had an almost seamlessly pure lyric soprano voice with effortless coloratura, a smooth legato and accurate intonation. Melba had perfect pitch; the critic Michael Aspinall says of her complete London recordings issued on LP, that there are only two lapses from pitch in the entire set. Like Patti, and unlike the more vibrant-voiced Tetrazzini, Melba's exceptional purity of tone was probably one of the principal reasons why British audiences, with their strong choral and sacred music traditions, idolised her.