Each week, the spotlight will be on...

Each week, the spotlight will be on buzz-worthy unknown or still-emerging pop musicians, whose albums hit stores Tuesday.

-- Chris Lee

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Imogen Heap

“Speak for Yourself”

RCA Victor Records

Artist info: Known for quirky vocals and exquisite trip-hop arrangements, Heap hit in America at age 18 with her solo debut, “I, Megaphone,” then went on to form alterna-pop band Frou Frou with Madonna producer Guy Sigsworth in 2001.

Back story: To build the home studio where she wrote, recorded and produced “Speak,” she remortgaged her London apartment, then self-released the album on her own imprint, Megaphonic Records.

Influences: Kate Bush, Annie Lennox, Bjork

Trivia: Heap crossed into the mainstream when her vocoder-heavy ballad “Hide & Seek” was played during last year’s season finale of “The OC” and shot to No. 32 on the Billboard Hot 100 Download chart.