A Press Conference of Forthcoming film "ROCK STAR" was organised in Mumbai which was addressed by Director IMTIYAZ ALI and RANBIR KAPOOR. The film features Bollywood's current hotties Ranbir Kapoor and Katrina Kaif. The story is stated to be inspired from the lives of B-town rock stars. Ranbir has given his best and worked a lot on the role as the source added, "Ranbir will go all out to prepare for his part as a rock star. He wants to look every inch the part. That includes the sinewy muscled physique and expertise with the guitar strings." The music is scored by Pritam and is already a HIT.