Gardelli was considered a specialist in the works of Verdi and he made several recordings of that composer's operas in the 1960s and 1970s, conducting pioneering recordings of the neglected early operas with record companies such as
Philips and Orfeo. These included
Alzira,
Attila,
Stiffelio,
I masnadieri,
Ernani,
Oberto,
Un giorno di regno,
Il corsaro, as well as more well-known works such as
Nabucco,
Macbeth,
La traviata,
La forza del destino. While not limiting himself to Verdi, he recorded the first complete French version of
Rossini's
Guillaume Tell and
Giordano's
Fedora with the rarely recorded
Magda Olivero. He made studio recordings of four Respighi operas with
Hungaroton. He was also mentor to several noted sopranos, including
Lucia Aliberti and
Sylvia Sass. His non-operatic recordings include orchestral works by
G. Bizet,
H.D. Koppel,
F. Mendelssohn,
I. Pizzetti and
O. Respighi. Some of his full opera recordings include: • Cherubini:
Medea – Dame
Gwyneth Jones,
Pilar Lorengar,
Bruno Prevedi,
Fiorenza Cossotto,
Justino Díaz –
Orchestra dell'Accademia Nazionale di Santa Cecilia (
Decca Records, 1968) • Verdi:
Attila – Ruggero Raimondi,
Cristina Deutekom,
Sherrill Milnes,
Carlo Bergonzi –
The Ambrosian Singers,
Royal Philharmonic Orchestra (
Philips Records, 1973) • Verdi:
I Masnadieri – Carlo Bergonzi,
Montserrat Caballé,
Piero Cappuccilli, Ruggero Raimondi – The Ambrosian Singers,
New Philharmonia Orchestra (Philips Records, 1975) • Verdi:
Nabucco – Tito Gobbi,
Elena Souliotis, Dora Carral, Bruno Prevedi, Carlo Cava –
Wiener Staatsopernchor,
Orchester der Wiener Staatsoper (Decca Records, 1966) • Verdi:
Macbeth – Elena Souliotis,
Dietrich Fischer-Dieskau,
Nicolai Ghiaurov,
Luciano Pavarotti – The Ambrosian Singers,
London Philharmonic Orchestra (Decca Records, 1971) • Verdi:
La traviata – Mirella Freni,
Franco Bonisolli,
Sesto Bruscantini –
Chor der Staatsoper Berlin,
Staatskapelle Berlin (
BASF Records, 1973) • Verdi:
La forza del destino – Martina Arroyo, Carlo Bergonzi, Piero Cappuccilli, Bianca Maria Casoni, Ruggero Raimondi,
Geraint Evans – The Ambrosian Singers, Royal Philharmonic Orchestra (
EMI, 1970) • Ponchielli:
La Gioconda – Renata Tebaldi, Carlo Bergonzi,
Robert Merrill,
Marilyn Horne,
Nicola Ghiuselev,
Oralia Dominguez – Coro e Orchestra dell'Accademia di Santa Cecilia (Decca Records, 1967) • Puccini:
Il tabarro – Renata Tebaldi,
Mario del Monaco, Robert Merrill –
Orchestra del Maggio Musicale Fiorentino (Decca Records, 1962) • Puccini:
Suor Angelica – Renata Tebaldi,
Giulietta Simionato – Coro e Orchestra del Maggio Musicale Fiorentino (Decca Records, 1962) • Puccini:
Gianni Schicchi – Fernando Corena, Renata Tebaldi, Agostino Lazzari – Orchestra del Maggio Musicale Fiorentino (Decca Records, 1962) • Rossini:
Guillaume Tell – Gabriel Bacquier, Montserrat Caballé,
Nicolai Gedda,
Mady Mesplé, Kolos Kovátz,
Gwynne Howell – The Ambrosian Singers, Royal Philharmonic Orchestra (EMI, 1973; original French version) ==Filmography==