Recycling? Layering?art on music painting

There’s a restaurant/cafe not far from here that also doubles as an art gallery. The building it occupies was once a bank, then a ‘Sailor’s Rest’ and even features a chapel, complete with vaulted ceilings.

There are two big paintings, one in the front section, the second in a chapel. The chapel one features a charcoal drawing on old pianola role paper. The one in the main part of the restaurant is painted on sheet music.

Is it recycling? Or is it layering – giving an extra level of meaning to the work? I have no way of knowing really. But I liked the painting, so to me it doesn’t really matter. It opens the discussion about whether it is necessary to know the artist to understand the work fully, or whether the work must stand alone.