There's an armful of new albums on the Billboard country charts this week, led by Blake Shelton's Based on a True Story, which debuts at No. 1.

And there's a new chart-topper on the country airplay songs list, as well -- Hunter Hayes' "Somebody's Heartbreak." It hits the summit after a 25-week climb.

Based on a True Story sold 199,086 copies its first week out, reports Nielsen SoundScan.

Kacey Musgraves' Same Trailer Different Park, last week's top album, has dipped to No. 7.

Bowing in at No. 2 is Alan Jackson's gospel project, Precious Memories, Volume II, on sales of 55,422 units.

The other newcomers are Thompson Square's Just Feels Good (No. 4), the various artists collection Official 2013 Academy of Country Music Awards 'ZinePak (No. 11), Maggie Rose's Out to Impress (No. 36), the Black Lillies' Runaway Freeway Blues (No. 43) and Redneck Social Club's We've Got Friends ... We've Got Ammo ... We've Got Plans ... (No. 55).

Returning to the chart are Hayes' Live EP (No. 71) and Chase Rice's Dirt Road Communion (No. 73).

Shelton's "Boys 'Round Here," recorded with Pistol Annies & Friends, is the highest-charting new song, arriving at an impressive No. 19.

Also making their first chart appearances are Taylor Swift's "I Knew You Were Trouble" (No. 55), Musgraves' "Blowin' Smoke" (No. 56), Kix Brooks' "Complete 360" (No. 59) and Carrie Underwood's "See You Again" (No. 60).

The No. 3 and No. 5 albums -- just to round out the Top 5 -- are Luke Bryan's Spring Break ... Here to Party and Swift's Red.

Songs No. 2 through No. 5, in that order, are Lee Brice's "I Drive Your Truck," Lady Antebellum's "Downtown," Shelton's "Sure Be Cool If You Did" (No. 1 for the past two weeks) and Thompson Square's "If I Didn't Have You."

OK, back to the radio.