Singer/songwriter Ryan Adams is following through on his pledge to release three albums this year.

On the heels of May's Cold Roses and September's Jacksonville City Nights, the series will conclude with 29, due December 20 via Lost Highway.

While the first two projects were credited to Adams and his new band, the Cardinals, 29 is billed as a solo album. The set features contributions from the Cardinals' J.P. Bowersock as well as bassist Jennifer Condos, who previously played on Adams' Gold.

The ambitious 2005 release slate has generated significant sales for the artist. Cold Roses has moved more than 123,000 units, while Jacksonville City Nights has shifted more than 57,000. Adams' best-selling release to date is 2001's Gold, which has moved nearly 350,000 copies.

Adams will play a two-night stand beginning tomorrow, Wednesday, with Willie Nelson at New York's Beacon Theatre. He will headline his own gig Friday at the city's new Tribeca Performing Arts Center as part of the Wall Street Rising concert series.