The opening titles of this DVD show pianist and conductor in rehearsal: two old men who first played in concert together 50 years earlier. Boulez is no longer the zealous young maverick who wanted to burn down concert halls (figuratively and, possibly, literally speaking); Barenboim has, of course, long been a conductor himself. In a printed interview the pianist relates that he didn’t come to appreciate Liszt until after he had accompanied Claudio Arrau in the Second Concerto.

The concert opens with Wagner’s early Faust Overture, filled with hints of the master to come but still in the thrall of Weber. The burnished tone of the Staatskapelle Orchestra and clarity of Boulez’s conducting sit well together. This could well be one of the conductor’s favourite pieces, although his impassive face never gives the game away.

Barenboim’s weighty touch is, in my view, not entirely suited to Liszt. While he produces a lovely full tone in the quiet passages (especially impressive in the Second Concerto), thundering fortes and double-octave passages sound and look effortful. In fact, despite excellent aural results, there is not a lot of the joy of music-making on show here. The Second Concerto precedes the better-known First, where Barenboim...