Here’s Robert Glasper, tearful and present, at the Fondation Louis Vuitton in Paris.

Nothing I can say about this clip could be more to the point than the Thomas Tranströmer poem “Allegro”.

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Allegro

I play Haydn after a dark day

and sense an honest warmth in my hands.

The keys are willing. Mild hammers strike.

The tone is green, lively and still.

The tone says that freedom exists

and that someone does not pay the emperor tribute.

I push the hands deep into my haydnpockets,

mimicking one who quietly watches the world.

I raise the haydnflag — this means:

‘We do not surrender. But want peace.’

The music is a glasshouse on the slope

where stones fly, stones roll.

And the stones roll right through

but each pane remains whole.