Hi Movies,
Not sure if there was any pun intended, thanks for complimenting as unbiased. :D
If Shankar had mentioned about new sounds, the answer is a simple 'No'. HJ does not seem to have attempted giving any new sounds... even to the extent he tried to give for a mediocre number (Thoodhu Varuma) in Kaaka-Kaaka. It may be recalled that he used Chinese strings for that song and it sounded distinct. Above all, I doubt if Shankar had made any comments like 'new sounds'. In all his recent interviews (2 with Ananda Vikatan and one with Sun TV), he sounds to be happy with the music he got from HJ. This statement seems to be a poor translation of Shankar's SunTV interview.
Harris has had two challenges in this project.
1. Tread in the path that has been tried and tested by Shankar-ARR. After all this is Shankar's movie and HJ is the replacement for ARR.
2. Prove your strengths in a high calibre movie, this is going to be critical in your career.
While the second one demands his creativity, the first one curbs the creativity. He needed to draw a line between these two extremes. I still believe he has come out well.