From 1970 to 1993, Lupu made over 20 recordings for Decca Records. His solo recordings, which have received considerable acclaim, include works by Beethoven, Brahms, Grieg, Mozart, Schubert, and Schumann, including all of Beethoven's piano concertos as well as five piano sonatas and other solo works; the Grieg and Schumann piano concertos, as well as three major solo works of Schumann; nine piano sonatas and the Impromptus and Moments musicaux of Schubert; various major solo works and the first piano concerto of Brahms; and two piano concertos of Mozart. His chamber music recordings for Decca include all of Mozart's sonatas for violin and piano with Szymon Goldberg; the violin sonatas of Debussy and Franck with Kyung Wha Chung; and various works by Schubert for violin and piano with Goldberg. He additionally recorded works of Mozart and Schubert for piano four-hands and two pianos with Murray Perahia for CBS Masterworks, Schubert songs with Barbara Hendricks for EMI, and works by Schubert for piano four-hands with Daniel Barenboim for Teldec.