Mumford & Sons’ “Babel” held on to the pinnacle of the U.S. album chart for a second frame this week, leading a top-10 field flooded with seven fresh titles.The London folk-rock band’s sophomore Glassnote release tallied 169,000 copies (off 72%) in its second week at No. 1, according to Nielsen SoundScan data for the week ended Oct. 7. That total brings the group’s cumulative sales to 769,000; it took Mumford’s slow-rising 2010 breakthrough debut “Sigh No More,” now just shy of 2.5 million, 47 chart weeks to surpass that number. Muse, bowed at No. 2 with “2nd Law” (Warner Bros.), which arrived with first-week sales of 102,000. It’s the powerful Devonshire act’s highest-charting set to date; its previous best came in 2009, when “The Resistance” came in at No. 3 with a 128,000-unit week. R&B vocalist Miguel made a leap into the big leagues with “Kaleidoscope Dream” (RCA), which arrived at No. 3 with a 71,000-copy score. The singer, born Miguel Pimentel in San Pedro, topped out at No. 37 with his 2010 debut album “All I Want Is You.” Pink’s “The Truth About Love” (RCA), which entered at No. 1 two weeks ago, held steady at No. 4 despite a 45% drop, selling 52,000. Canadian rock band Three Days Grace continued its winning ways in the States, posting a No. 5 overture with “Transit of Venus” (RCA), which climbed aboard with 48,000 shifted. The Toronto quintet has logged three top-five albums in a row, with its latest succeeding 2009′s “Life Starts Now” (No. 3) and 2006′s “One-X” (No. 5). Two very different female vocalists occupied successive slots with retrospective recitals. Canadian singer-pianist Diana Krall’s “Glad Rag Doll” (Verve) moved in at No. 6, moving 46,000. Her T Bone Burnett-produced album comprises interpretations of Tin Pan Alley and mid-20th-century pop numbers. It’s her fifth top-10 release. Pre-teen prodigy Jackie Evancho’s “Songs From the Silver Screen” (Columbia) took the No. 7 post, ringing up 42,000 copies. The 12-year-old former “America’s Got Talent” whiz kid essays movie repertoire, from Disney toon tunes to “My Heart Will Go On” from “Titanic.” Ellie Goulding, Kiss and Barbra Streisand will compete for top chart real estate next week.