Katy Perry

"If it goes to No. 1, that would be great," EMI Music/Capitol Records EVP/marketing and promotion Greg Thompson told Billboard two weeks ago. "If not, we still have a Katy song on the radio in fourth quarter," likely fueling further sales for "Dream" in the bustling shopping season.

Ahead of its official push, "One" made early strides at radio in the past seven days (Sept. 21-27). The song improved from eight to 106 plays on the more than 1,200 stations monitored by BDS for the Hot 100.

KHTT (106.9 K-HITS)/Tulsa, Okla., led with 30 plays for "One" (up from 25) in that span, followed by KQCH (Channel 94.1)/Omaha, Neb. (25, up from 22), and WNKS (Kiss 95.1)/Charlotte, N.C. (21 first-week spins).

KHTT first sampled the song Aug. 23, 2010, the day before "Dream" was released to retail. The set, which topped the Billboard Hot 100 upon its debut, has sold 1.8 million copies in the U.S., according to Nielsen SoundScan.

As an album track, "One" has sold 77,000 downloads.

A video for "One" will be shot "in the coming days," according to Capitol. Also potentially aiding the song's cause are more tour dates for Perry. Her California Dreams World Tour that began earlier this year with stops in Europe, Australia, New Zealand and Japan continues with five dates next month, including a show at New York's Madison Square Garden Nov. 16, before the tour wraps, fittingly in the Golden State, at Los Angeles' Staples Center Nov. 22.