"Sittin' Up in My Room" is a song by American recording artist Brandy Norwood. It was written and produced by Babyface and recorded by Norwood for the soundtrack of the 1995 film Waiting to Exhale, starring Whitney Houston and Angela Bassett. The song was among five of the album's singles and peaked at number two on the US Billboard Hot 100, seeing Norwood's furthest commercial success on the chart until 1997's "The Boy Is Mine". The bass intro is similar to that of the riff performed by bassist Larry Graham, of Sly and the Family Stone, on their hit "Thank You (Falettinme Be Mice Elf Agin)", and its remix featuring LL Cool J contains a sample of "Haven't You Heard" by Patrice Rushen.^[1]

"Sittin' Up in My Room" was performed on several television and award show ceremonies, such as Late Show with David Letterman, the 23rd Annual American Music Awards, the 1996 Soul Train Awards, the 39th Annual Grammy Awards, and the 2015 Soul Train Music Awards. A music video was also filmed, depicting Brandy keeping herself penned up in a retro, brightly colored room after her friend tells her that her love interest is joining the party downstairs. Actor Donald Faison appears as her love interest in the video, directed by Hype Williams. It won the award for Best Song from a Movie and was nominated for Best Video from a Film at the 1996 MTV Awards. The song has since been performed on several awards shows and Norwood's concerts and tours, including the 1998 Never Say Never World Tour and the 2016 Slayana World Tour.

"Sittin' Up in My Room" was written and produced by Kenneth "Babyface" Edmonds.^[2] Edmonds also helmed the drum programming (along with the production duo Trackmasters), synthesizer, and wurlitzer sounds, while Michael Thompson played the guitar.^[2] "Bassy" Bob Brockmann mixed the track; recording was overseen by Brad Gilderman.^[2] The record was from a number of songs Edmonds specifically penned for the soundtrack of Forest Whitaker's 1995 romantic drama film Waiting to Exhale, starring Whitney Houston and Angela Bassett.^[3] Musically, songs from fellow R&B singer Aaliyah's debut album Age Ain't Nothing but a Number (1994) served as an inspiration while starting the song idea for "Sittin' Up in My Room".^[3] Edmonds finished most of the demo on his Los Angeles house, before Norwood came over for recording.^[3] Commenting on the recording process, Norwood later elaborated: “I was going crazy with my vocal runs because I really wanted to impress Babyface. I knew how to pull back, but it was one of those things where I thought, ‘This is my chance!’ I always wanted to work with Babyface going back to ["Tender Lover"] [...] Actually, he was the most legendary producer that I had worked with to that point. So when I was recording ‘Sittin’ Up In My Room,’ I was thinking, ‘This is my chance to show Babyface that I could sing!’ But he was like, ‘You don’t have to do all of that. Just sing, baby. Just keep your vocals simple.’”^[4]

The accompanying music video for "Sittin' Up in My Room" was directed by Hype Williams. Norwood declared filming as "fun" as she had a "great relationship" with Williams at that time, having previously worked with him on the videos for the Hip–Hop Remix of "I Wanna Be Down" and her second single "Baby".^[19] Actor Donald Faison appears in the video; Faison played the son of Loretta Devine's character Gloria in Waiting to Exhale.^[19] Commenting on the result, Norwood remarked: "It was a great video, dance and everything. It was dope.”^[19]

In 1997, jazz fusion/contemporary jazz group Pieces of a Dream offered their take on the album Pieces.^[61]