The sight of musicians presumably not wanting to annoy their neighbours with noise by practicing outside are a fairly common sight in Tokyo, especially so when it comes to wind instruments.
Little old ladies cranking out chords on keyboards on the other hand are, somewhat sadly, considerably less common.
The soothing sounds of which can be sampled here:
And, after taking these few photos, I left her to it, blissfully unaware of other people,
or indeed even the park’s, presence.