INDIANAPOLIS – The Grammy Award–winning, multi-platinum selling trio Nickel Creek — Chris Thile (mandolin/vocals), Sara Watkins (fiddle/vocals), and Sean Watkins (guitar/vocals) — officially reunites for the first time since its 2007 self-described “indefinite hiatus” with a new album, “A Dotted Line.”

The band is touring the U.S. in support of the Eric Valentine–produced album, with shows in New York, Boston, Washington, Chicago, Nashville and Los Angeles, as well as at the Telluride Bluegrass Festival and Newport Folk Festival.

Nickel Creek with special guest The Secret Sisters will play 7:30 p.m. Wednesday, May 7, at the Murat Theatre at Old National Centre in Indianapolis.

As Nickel Creek’s 25th anniversary approached, the band members decided they ought to mark it in some way, so they got together to write music in Chris Thile’s apartment last year. They ended up with six new co-written songs, which they eventually took to a Los Angeles studio, along with one tune by Thile, one by Sean Watkins, and two covers: Sam Phillips’ “Where Is Love Now” and Mother Mother’s “Hayloft.” There they worked with Valentine (Queens of the Stone Age, Smash Mouth), who had produced Nickel Creek’s previous album, Why Should the Fire Die?.

“We were excited every day to be there,” Sara Watkins says. “Having grown up singing together, there is something natural about our voices and it’s really fun to harmonize. Our voices have come to match each other’s really well. Sean and I are siblings, and Chris is about as close to a sibling as you could get.” Sean Watkins continues: “It feels more natural and easy than it ever did, by far. Getting to spend time alone with our own musical personalities has helped us mature.” “There’s a joyful aspect to Nickel Creek no matter what we’re doing. Things just steer themselves into that sort of place,” concurs Thile. “We will go poke around in the dark corners but always with a heavy dose of optimism.”

For ticket info, go to oldnationalcentre.com.