The whole duet project began when he was approached by Datin Zaiton Mohamad Jiwa , owner of Global Station . She offered him a chance to produce and record a duet with Siti Nurhaliza for her production house 's latest television series , '' Lara Aishah '' . Upon receiving the offer , Faizal immediately worked on the song during the Islamic month of Ramadan . Siti and Faizal recorded their vocals separately since at the time of Faizal 's recording , Siti was in Mecca to perform the Umrah . Fully composed by Mike Chan , Ezra Kong , and Faizal himself , Faizal recorded his part during Ramadan while Siti recorded her part after Eid al-Fitr . Faizal commented : " Dirgahayu is fully composed by myself and two friends of mine which are Mike Chan and Ezra Kong . Actually , before this people have been asking for Datuk Siti Nurhaliza and I to work together . By happenstance , the production company , Global Station Pte Ltd proposed to me to compose a song with her for a 100-episode drama series for Astro . " " Dirgahayu " marked their first effort to record a song together . Previously , they had worked together on a number of occasions including '' Konsert Satu Suara '' , a concert for Faizal Tahir in 2010 which was sponsored and produced by Siti Nurhaliza 's own production company , Siti Nurhaliza Productions . He also composed and produced " Aku " , one of the songs that was included in '' Fragmen '' , an album by Siti Nurhaliza which was released in 2014 . He also has served as guest artist for a number of Siti Nurhaliza 's concerts , including '' Dato ' Siti Nurhaliza Unplugged 2015 '' concert and '' Dato ' Siti Nurhaliza & Friends Concert '' in April 2016
Dato ' Siti Nurhaliza & Friends Concert
Dato' Siti Nurhaliza & Friends Concert
Dirgahayu