The path taken by Lowell Summer Music Series organizers to build this year's lineup of concerts at Boarding House Park parallels that of the career of its latest announced artist, Howie Day.

Day, who comes to Boarding House Park with Carbon Leaf on Saturday, Aug. 2, at 7:30 p.m., built his following through a series of self-released promotional CDs in the late 1990s and 2000 before Epic Records signed him.

That's when he released "Stop All the World Now," a 2003 album that contained his three biggest hits: "Perfect Time of Day," "Collide" (his biggest single, selling 1.5 million copies) and "She Says."

The album was a success, but not overnight, so Day went back to the path that has proven most successful by releasing another EP, "Live From ...," in late 2005.

While he worked on his next studio album, 2009's "Sound the Alarm, Day" released yet another EP, "Be There," earlier that year. In the years that have passed since "Sound the Alarm," Day has put out yet another EP, 2011's "Ceasefire."

For someone who was born in Bangor, Maine, Day's had quite the career over the past two decades. He first supported Ziggy Marley in a show at the University of Maine while going to school there. Years later, "Collide" has been played on shows such as "Cold Case," "Scrubs" and "Grey's Anatomy."

Carbon Leaf offers a unique mix of Celtic, Appalachian, folk, pop and country into what it calls "ether-electrified porch music." Emerging from their hometown of Richmond, Va., they won an American Music Award in 2002 for their Irish-tinged hit "The Boxer."

Now in their 20th year, the quintet is a mainstay on the road with a nonstop touring schedule. It's been a long road for Carbon Leaf and it will come to Lowell this summer.

Howie Day and Carbon Leaf will appear at Boarding House Park in Lowell as part of the Lowell Summer Music Series on Saturday, Aug. 2, at 7:30 p.m. Tickets are $29 in advance, $35 day of the show, and are available at www.lowellsummermusic.org.