Hey, Buddy! Don't you wish you could have a glimpse of the future, without risking a disruption of the temporal continuum and a potential "butterfly effect"? Good news: We've seen the world of tomorrow, and we're back to blow your mind. Here's what lies ahead for four key Mediabase charts.

TOP 40
Avicii will retain the top slot with “Wake Me Up” (PRMD/Island/IDJ), as RCA’s Miley Cyrus edges upward to #3. Capitol’s Katy Perry moves to Top 15 and is the week’s greatest gainer. The new Eminem track featuring Rihanna, “The Monster” (Interscope),climbs into the mid-20s in one week. Republic’s Enrique has another solid week with a move to Top 30. Look for “Harlem” by RCA’s New Politics, Chris Wallace’s “Keep Me Crazy” (ThinkSay) and the latest from SYCO/Columbia’s One Direction, “Story of My Life,” to climb on the chart.

RHYTHMIC
The Top 10 once again remains unchanged. Sage the Gemini’s “Gas Pedal” (Empire/Republic), Justin Timberlake’s “TKO” (RCA) and Jay Z’s “Tom Ford” (Roc-a-Fella/Roc Nation) all look to have significant increases, as does Kid Ink’s “Show Me” (RCA). Iggy Azalea’s “Change Your Life” (Def Jam/IDJ) looks to debut this week.

ALTERNATIVE
Bastille (Virgin) should stay #1 for another week. RCA’s Cage the Elephant is hot on its heels, though; at a fast-rising #2 and just 50x behind going into the weekend, it’ll likely “Come A Little Closer” will go #1 next week. Pearl Jam (Monkeywrench/Republic) moves into the Top 10 with “Sirens.” Arctic Monkeys (Domino) and “Team” from Lorde (Lava/Republic) are having nice spin weeks and look to be strong contenders for Top 10 status. “The Mother We Share” by Glassnote’s Chrvches continues to grow, rising to #25.

HOT AC
Not much change in the Top 10 at Hot AC this week, and “Royals” by Lava/Republic’s Lorde remains in the top slot. Capitol’s Katy Perry moves into the Top 20 (#2 Greatest Gainer), while Epic has moved three into the Top 30, all with solid gains: The Fray with “Love Don’t Die,” A Great Big World’s “Say Something” and Avril Lavigne’s “Let Me Go.” New on the Chart this week will be Virgin/Capitol’s Bastille with “Pompeii” and Hollywood’s Plain White T’s with “The Giving Tree.”

Now you've seen the future. Aren't you relieved not to find any apes on horseback?