[3] Four songs have been released': "Tattooed On My Mind", a remake of the D'Sound hit; "Hey Look at the Sun", "I Didn't Know I Was Looking for Love", and "Para Sa Akin".

In 2009, Sitti released her third studio album entitled "Contagious", which contains an original which was also the carrier single, "Is This Love", co-penned by Andrew Fromm, who also penned Christian Bautista's hit song, "The Way You Look At Me".

On March 8, 2012, she released her fifth studio album, Sitti - Sessions, which spawned two singles; "Sino'ng Mag-aakala" and "Wag Mo Na Munang Sabihin".

In 2013, she participated in the Philippines' highly esteemed Elements National Music Camp, where she was mentored by the likes of Ryan Cayabyab, Joey Ayala, and Gary Granada.

On June 25, 2013, it was announced that she will be entering the second Philippine Popular Music Festival as an interpreter with Julianne Tarroja for the song called "Pansamantagal" written by Jungee Marcelo.

[11] Sitti was also co-host of Pinoy Big Brother Season 2 on Studio 23, alongside Asia Agcaoili, ending with the victory of Beatriz Saw.

She ventured into acting in Judy Ann Santos' primetime teleserye, Ysabella, where she portrayed Tere, an aspiring lounge singer.

She appears on a segment called ASAP Sessionistas together with MYMP, Aiza Seguerra, Nina, Richard Poon and Duncan Ramos.

Alongside her was KC Concepcion, Jericho Rosales, Mitch Valdez, Dulce, Eugene Villaluz, Rachel Alejandro, Bituin Escalante, Jonalyn Viray, Aicelle Santos, Maricris Garcia, Frenchie Dy, Gian Magdangal, Gab Valenciano and Jennylyn Mercado.