Beyonce Notches 4th Billboard 200 No. 1 with '4'
Beyonce Notches 4th Billboard 200 No. 1 with '4'

Beyoncé's reign is unstoppable. In the past two months, Beyoncé has stolen shows ("Oprah's" star-studded finale week, the 2011 Billboard Music Awards, Glastonbury Festival), teamed up with First Lady Michelle Obama to fight childhood obesity, and given the world chills with rehearsal footage of herself performing ballad "1+1" (shot by her husband Jay-Z).

Beyoncé: The Billboard Music Awards Q&A

All leading to today (June 28): the release of her fourth studio album, "4." Beyoncé takes risks on "4." She delves into different genres and transports us through different eras, riding the lows and highs of emotion and pitch. Bey' had her minx tips in every part of "4." She executive produced the entire album and co-wrote the majority of the tracks.

Babyface, who wrote "Best Thing I Never Had," on "4," shared his thoughts on Beyoncé's legacy. "What is the definition of perfection... or the closest thing to it? Beyoncé," Babyface said. "Icons are made. Stars are born. From the moment Beyoncé took her first breath, her star was shining. What an honor it is for me to say that I danced with a true star, or wrote."

Which "4" track will lead Beyoncé to the chart domination she's known for? Here's our Twitter-length track-by-track review of each song.

You be the judge: What do you think of Beyoncés "4" album? Tweet us your own review at @billboarddotcom (using hashtag #bbbeyonce). The best tweets will be posted on Billboard.com in the coming days.

1. "1+1": Written & produced by Tricky Stewart & The-Dream. It showcases Bey's vocal prowess, passion of lyrics are as intense as the electric guitar.

2. "I Care": "I know you don't care too much but I still care," Beyoncé coos. Beauty in honesty and, ironically, power in admitting your vulnerability.

3. "I Miss You": Co-produced by Bey'. Written by Frank Ocean. "I miss you/ But if I got with you, could it feel the same?" Longing lingers in between each word.

4. "Best Thing I Never Had": "Irreplaceable" 2.0, theme-wise. Ditched Ne-Yo for Babyface. Builds to an 'I'm moving on' anthem, "Thank God I found the good in goodbye."

5. "Party": Feel-good, late '80s, New Jack Swing-inspired. Ye' introduces "swagu!" Andre 3000's rhymes are like a blue moon, rare and pretty amazing.

6. "Rather Die Young": Love without care of what others say. James Dean reference. "I rather die young/ Than live my life without you/ Rather not live at all..."

7. "Start Over": Again honest when it comes to love, Bey' won't surrender till she and beau "give love another life." Bey's roar matches the song's fight.

8. "Love on Top": Halcyon love song, perfect to be whisked away to. Reminiscent of 80's R&B. Co-written by The-Dream, Shea Taylor & Bey'. Wedding song?

9. "Countdown": Written by The-Dream, samples Boyz II Men's "Uhh Ahh." Potential to manifest trillions of YouTube dance crazes. Put your heels on for this!

10. "End of Time": Co-written and produced by The-Dream. He's everywhere! The drums steal the show. Would trade for "Run the World (Girls)" as lead single.

11. "I Was Here": Diane Warren writes a reflective ballad for Beyoncé. "The hearts that I have touched are the proof that I leave that I made a difference..."

12. "Run the World (Girls)": The girl anthem's sample of Major Lazer's "Pon de Floor" is triumphant. Written by The-Dream, co-produced by The-Dream and Switch.