I see now that when I was (or am) responding to Glenn Gould's playing of Bach, it is a depiction of Heaven in a very detailed sense. I can (sometimes) feel this moment by moment, each tiny decision, nuance; the lines, tones, harmonies asif happening for the first time with surprising inevitability.
I am able to re-experience Gould's ecstatic absorption in his playing, and in the music as Bach composed it - and my condition in Heaven (when I want it) will be to play like Gould and compose like Bach but in my own (unique) way; because if I can respond to it on earth, then I can do it in Heaven.
Primarily, Heaven is a place of love and relationships; but/and Heaven is a place of creativity - the creativity of making and of performance. (It is a place of all positive Goods.)
Each person's creative ability and urge is different, and changed and expanded by experience and in combination. There is no repetition; and the creating can go on for as long as wanted.