Week of June 27

By holding at No. 1 for a fourth consecutive week, Katy Perry and Snoop Dogg are making a serious run for the top hit of 2010 with "California Gurls." The current leader is "Put It in a Love Song" by Alicia Keys and Beyonce, the only other song to spend four weeks at the top so far this year. Perry and Snoop can pass them with a longer run at the top or a longer chart run overall. We'll see how things go in the weeks to come.

Meanwhile, five new songs this week, including some artists who haven't been around in a little while. Maroon 5 return at No. 35 with "Misery." It's the group's first chart appearance in about a year and a half, since their collaboration with Mary J. Blige on the remix of "Wake Up Call" hit No. 12. A much longer chart drought ends for Tom Petty & the Heartbreakers. "I Should Have Known It" enters at No. 38, making it the first chart appearance in eight years for the group; "The Last D.J." hit No. 15 back in 2002. Their latest is from their new release, "Mojo."

Uncle Kracker is trying for three in a row with "Good to Be Me," his collaboration with Kid Rock from his new EP, "Happy Hour: The South River Road Sessions." Kracker's last two songs -- "Smile" and "Another Love Song" -- both went to No. 1.

An interesting chart oddity this week: Three songs with very similar titles are within a few positions of one another. Sister Hazel holds at No. 31 with "All the Love" from the group's EP "Threeve." A couple of positions higher, Kylie Minogue moves up four with her latest single, "All the Lovers." And one notch above that is Bettye Lavette with her remake of Led Zeppelin's 1979 track "All My Love."

Last note for the week: MercyMe's "All of Creation" is showing unusual staying power by moving back into the Top 10, this week up 13-10, after having peaked at No. 6 and fallen out of the Top 10 a few weeks back. The group's most popular songs, "I Can Only Imagine" and "Here With Me," came during the period when my charts were inactive, but this one looks to rival them in popularity.