Just as the boy band phenomenon began winding down, Lachey decided to focus on other ventures. The second tenor married his longtime girlfriend, singer Jessica Simpson, in fall 2002 and launched a solo career. He and Simpson instantly became A-list celebrities when their MTV-based reality show, Newlyweds, captured American audiences in 2003. While their show was still going strong, Lachey issued his first album for Universal, the R&B/pop-flavored album SoulO, before the year's end. In between albums, Lachey tried his hand at acting. He appeared in several episodes of the WB's Charmed in 2004 and 2005, and had a small part in the Nora Ephron comedy Bewitched. Before the year's end, Lachey and Simpson announced their separation. In the midst of a tabloid field day, Lachey resumed his music career in spring 2006 with the release of his second album, a number two hit titled What's Left of Me.
What's Left of Me wound up earning a gold certification from the RIAA -- its title track reached six on the Billboard Hot 100 -- but Lachey's recording career soon reached a standstill. He began work on a third album in 2007, but a series of delays led to Jive scrapping the album in January 2010. By June of that year, he wound up leaving the label. As he toiled on this project, he wound up signing a deal to host the NBC vocal competition The Sing-Off. Debuting in 2009, it stayed on the air until 2014. During the show's run, he released the family album A Father's Lullaby on Fisher-Price in 2013. Once The Sing-Off wrapped up, Lachey released a collection of cinematic covers called Soundtrack of My Life on his Little Nicky label in November 2014. After a couple of quiet years, Lachey re-emerged in September 2017 as part of the cast for the 25th season of Dancing with the Stars. In November, as the season reached its close, Lachey released the single "Someone to Dance With." ~ MacKenzie Wilson, Rovi