CHENNAI: Remember Michael Jackson’s performance This Is It, which was made into a documentary-concert film later? On those lines, AR Rahman will release his concert tour as a documentary in April. Produced by Grape Ventures in association with YM Movies, it has been titled One Heart. Reports suggest that it will feature rare footages of the musician perform with his band, besides old and new interview clips and backstage scenes from the concerts. Renowned TV producer-author Nasreen Munni Kabir has done the editing. In February, it was premiered exclusively in Toronto’s Scotia Bank cinema hall.