who all were featured in this video?
Lucas Kerr and Ashley Tisdale
Part of Me (Katy Perry song)
As Perry sits in her car outside of the office where Jason (Lucas Kerr), her boyfriend is working at, she sees him interacting flirtatiously with a woman (Ashley Tisdale of "High School Musical" fame). 
katy perry this is the part of me song UNANSWERABLE who wrote the lyrics of this? Katy Perry and Bonnie McKee who is the second person? American singer and songwriter what do the lyrics interpret? James Dinh of MTV noted that "the pop star appears strong, bold and just a tad resentful after a breakup" on the track. what is the genre of this track? Dance-pop and power pop what musical instruments are played in the background? UNANSWERABLE in what musical key is the track composed? t is composed in the key of D minor and set in a 4/4 time signature at a tempo of 130 beats per minute. what was the feedback given from the critics after listening to this track? Jody Rosen of "Rolling Stone" gave the song three stars out of five, calling it "just plain predictable." on which chart did this track feature amongst the top 10? In the United States, "Part of Me" debuted at number one on the "Billboard" Hot 100 and the U.S. Hot Digital Songs chart. is there a music video for this track? Yes
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Part of Me (Katy Perry song) [SEP] Synopsis
As Perry sits in her car outside of the office where Jason (Lucas Kerr), her boyfriend is working at, she sees him interacting flirtatiously with a woman (Ashley Tisdale of "High School Musical" fame). Perry confronts him in his office, slams down her heart pendant on the desk and ends their relationship before Jason, can get a chance to talk to her as we see Perry, storming out the door. The title track begins as we see Perry driving to a gas station, where she buys a can of tea. After paying for her items, she sees a moto-sticker on a notice board which reads, "All women are created equal, then some become Marines".