In case you missed it the first time around (and you know who you are), Ben Niles's documentary Note by Note: The Making of Steinway L1037 has returned to Chicago for another run at the Gene Siskel Film Center, through April 17. "Back by popular demand," says the Film Center's web site. My Time Out Chicago review from last January is here, and it is surely as relevant today as is was then. Niles will attend the Friday screenings.