The piano concertos Mozart wrote from late 1784 to early 1786 - numbered from the late teens into the early mid-20s - are held up as a peerless series of masterpieces, one made all the more extraordinary by the short period over which they were composed.

Perfectly valid as opinions go, but it does have the unfortunate effect of leaving the rest unduly overlooked. While the earlier ones can be legitimately viewed as leading up to this creative peak, it is all too easy to dismiss the few that came afterwards as a brief tailing-off. Unfortunately, there may be grounds for this in the case of his Piano Concerto No 26, Coronation: the constant dialogue between piano and woodwind that is always a highlight of the mature Mozart is noticeably absent, so the work can feel like a step backwards stylistically.

This inevitably - and rather unfairly - has a knock-on effect on No 27, when it’s actually very much a return to form. The fact that Mozart would write no more piano concertos afterwards robs it of context, as we can't know how it would have fitted into the wider scheme of things. As a result, it stands out as something of an anomaly before even considering the music itself.

Outwardly perfectly cheerful, this last piano concerto contains several hints of the autumnal atmosphere that was creeping into Mozart’s late works, including the much better-known clarinet concerto. The brilliance typical of the earlier concertos seems a touch muted, as though a light fog were lingering on the horizon.

This final piano concerto therefore occupies a middle ground in the set: while nowhere near as dark as the two written in minor keys, the effortlessly chipper mood which had pervaded the earlier concertos is noticeably absent. Instead, the score is scattered with glimpses of minor keys, giving the music a fascinating sense of ambiguity. It suggests a new sense of maturity in the composer: once the young buck, he is now a considered adult – giving us all the more reason to regret what might have been, had he not died a year of its first performance.