Jaap van Zweden became the conductor for the New York Philharmonic Orchestra a couple of months ago and back then he gave an interview in which he expressed interest to work with Gaga and Pharrell. He's given his first concerts now and given a new interview. He said Gaga and Katy were both impressed and contacted him to work together; he's flying to Vegas soon to make plans https://www.nrc.nl/nieuws/2018/10/29/van-zweden-wil-met-lady-gaga-samenwerken-bij-new-york-philharmonic-a2753138