This is the fourth track on the album "Red" by Taylor Swift. The music video of this song was uploaded on Youtube on December 14, 2012 (you can check this out on the below). The video starts with Swift speaking in a confessional voice-over. Swift wakes up on an abandoned desert, surrounded by trash and debris, and wearing dark makeup. Flashbacks show Swift and her boyfriend engaging in various stunts, along with a few tender moments, such as when Swift's boyfriend gives her a necklace as a gift. After a while of what seems to be a good relationship, she begins to realize something is wrong. While in his parked car, he leans over to kiss her when some police pull up for him. He starts a fight in a club, which results in the both of them being injured. There are also scenes of her in a grimy small bathroom, looking at herself in the mirror. While at an outdoor concert, she sees him kissing a large number of different girls. He then looks at her in a nonchalant fashion. She falls asleep in the desert where the party is being held, and wakes up alone the next morning. The video ends with her letting go of the necklace he gave her (Wikipedia).

Overall, I think this song tells of a longing for a love story that has ended. This indicates a desire to feel again the love story which ever fill the days in the past. Lyrically, there is a regret and disappointment at the actions taken in the past that triggered the breakup of relationships. For more details about this song, we should see a direct statement from Taylor Swift. "I had just gone through an experience that made me write this song about like knowing the second you see someone like, 'Oh, this is going to be interesting. It's going to be dangerous, but look at me going in there anyway... I think that for me, it was the first time I ever kind of noticed that in myself, like when you are curious about something you know might be bad for you, but you know that you are going to go for it anyway because if you don't, you'll have greater regrets about not seeing where that would go, but I think that for me it all went along with this record that was pushing boundaries, like the sound of this record pushes boundaries, it was writing about something I hadn't written before." Through this statement, I think you can understand the feelings given by Swift in the making of this song. And I think, through this statement you can understand this song well.

Romance certainly leave scars that are stored properly in our minds when the romantic relationship has ended. We may regret and disappointment because of the relationship that we have built together with the people we love ended. Perhaps behind all these events there is a lesson that we can take. When we have a case like that, we will be strengthened and made more mature in taking action in the future. We get better and mature in determining our options in the future, we will learn from the experience in the past. Each story makes us learn an important thing that can make us better. We should be able to learn from failure and move on to become a better human being again in the future.

The song begins as a typical pop rock, sock hop music with jaunty guitar sounds and Swift singing the lyrics which describes the early stages of a romantic affair; the tune soon changes its composition. Featuring instrumentation from bass guitar, electric guitar and keyboards, "I Knew You Were Trouble"'s chorus is built around "whirring" sub-bass according to Mark Hogan from Spin magazine, with digitally tweaked vocal hooks and dubstep, while Jonathan Keefe of Slant Magazine noted that the bass drops "fit naturally into the song's slick pop-rock arrangement and make its melodic hook all the more potent." During the middle eight of the song, most of the background music stops and Swift sings in a shrill voice the lines "you never loved me, or her, or anyone, or anything". As per the sheet music published at Musicnotes.com, the song is set in common time with a moderately fast tempo of 154 beats per minute, and switches to half time during the chorus. It is set in the key of E♭ minor with Swift's vocal ranging from B♭₃ to E♭₅. The song follows a I–V–vi–IV chord progression.

The song became one of my favorite songs on the album, this song may also be one of my favorite songs of all Swift songs I have ever heard. The song has a good chemistry in influencing us. This song can hypnotize us and made us come to enjoy this song. Dubstep genre on this song also brought a different atmosphere at this track. We like made to swaying while listening to rhythm of the song at the beginning of this song. Rhythm at the beginning of this song became the most powerful appeal for the listeners. This song is recommended for people who miss the romance of the past. This song is suitable listen to while we were relaxing or being bored. Ok, for more details just see the lyrics and watch the music video of this song on the below, check it out guys ;) 

The Lyrics of I Knew You Were Trouble by Taylor Swift

Once upon a time a few mistakes ago

I was in your sights, you got me alone

You found me, you found me, you found me

I guess you didn't care, and I guess I liked that

And when I fell hard you took a step back

Without me, without me, without me

And he's long gone when he's next to me

And I realize the blame is on me

'Cause I knew you were trouble when you walked in

So shame on me now

Flew me to places I'd never been

'Til you put me down, oh

I knew you were trouble when you walked in

So shame on me now

Flew me to places I'd never been

Now I'm lying on the cold hard ground

Oh, oh, trouble, trouble, trouble

Oh, oh, trouble, trouble, trouble

No apologies. He'll never see you cry,

Pretends he doesn't know that he's the reason why.

You're drowning, you're drowning, you're drowning.

Now I heard you moved on from whispers on the street

A new notch in your belt is all I'll ever be

And now I see, now I see, now I see

He was long gone when he met me

And I realize the joke is on me, yeah!

I knew you were trouble when you walked in

So shame on me now

Flew me to places I'd never been

'Til you put me down, oh

I knew you were trouble when you walked in

So shame on me now

Flew me to places I'd never been

Now I'm lying on the cold hard ground

Oh, oh, trouble, trouble, trouble

Oh, oh, trouble, trouble, trouble

And the saddest fear comes creeping in

That you never loved me or her, or anyone, or anything, yeah

I knew you were trouble when you walked in

So shame on me now

Flew me to places I'd never been

'Til you put me down, oh

I knew you were trouble when you walked in (you were right there, you were right there)

So shame on me now

Flew me to places I'd never been

Now I'm lying on the cold hard ground

Oh, oh, trouble, trouble, trouble

Oh, oh, trouble, trouble, trouble

I knew you were trouble when you walked in

Trouble, trouble, trouble

I knew you were trouble when you walked in

Trouble, trouble, trouble

The Music Video of I Knew You Were Trouble by Taylor Swift