Here is the list of Top 10 Best Background Score given by a Musician in a Bollywood Film released in the year 2009.
#10 - Illayaraja (Paa)
#9 - Salim - Suliaman (Rocket Singh – Salesman of The Year)
#8 - Salim - Sulaiman (Wanted)
#7 - Amar Mohile (Luck)
#6 - Vishal Bhardwaj (Kaminey)
#5 - Shantanu Moitra, Atul Raninga and Sanjay Wandreker (3 Idiots)
#4 - Salim - Sulaiman (London Dreams)
#3 - A. R. Rahman (Blue)
#2 - A. R. Rahman (Delhi-6)
#1 - Amit Truvedi (Dev D)