Siddharth's upcoming movie Udhayam NH4 audio was released on April 1st. Director Manimaran and actress Ashritha Shetty are making their debuts with this film.

G.V.Prakash Kumar composed the tunes. The movie is undergoing its post production work and censor work will be in next week.

Udhayam NH4 audio launch was held at Suriyan FM radio station on 1st of April. A single track "Yaaro Ivan" is already topping the charts. The movie is Tamil- Telugu bilingual and Siddharth crooned the Telugu version of "Yaaro Ivan". Siddharth tweeted, "Fantastic album from @G.V.Prakash for 'NH4' comes out. Music releasing on fm in Tamil & Telugu, I've sung on the Telugu album. Cheers."

Kay Kay Menon, Kishore are playing the prominent roles. Dhayanidhi Azhagiri and Vetrimaran produced this movie under Meeka Entertainments and Grass Root Film Company. Udhayanidhi Stalin of Red Giant Films has acquired the distributed rights.