New Delhi, Aug 5 (IANS): Refuting rumours that composer duo Vishal-Shekhar is upset with superstar Shah Rukh Khan, Rohit Shetty said this is not true.

The composers have scored music for Shetty-SRK's "Chennai Express", which also has a promotional song by Honey Singh.

“Vishal-Shekhar never had any problem with me or Shah Rukh. He was not there at the music launch because he had some prior commitments,” Shetty told reporters during the promotion of the film here.

According to reports, Vishal and Shekhar were not happy with Honey Singh lending his voice for a song and and as a result, the composers stay away from the film's promotional activities.

“I really don't know what's his problem with Honey Singh and what he keeps tweeting about. We all had so much fun working together in 'Chennai Express',” said Shetty.

Their displeasure was made obvious during the recent episode of “Indian Idol Junior” where SRK, Rohit and Deepika Padukone came to promote “Chennai Express”. Vishal-Shekhar, who judge the show with singer Shreya Ghoshal, were not present there.

Vishal keeps tweeting against Honey Singh on the microblogging site.

One of his tweet on Honey read: "It's hilarious and pathetic, how desperately this tacky rap-rapper is trying to ride on the fame of @iamsrk and 'Chennai Express'. Poor guy."