To create a great song, you need to be intentional, specific, meticulous. Masterpieces such as Diana Ross’ “Ain’t No Mountain High Enough,” the Beach Boys’ “Good Vibrations,” and Janet Jackson’s “Rhythm Nation” are built brick by brick, bar by bar. Or maybe, you need to forget all that precision and go with your gut.

The War and the Treaty — a wife-and-husband duo who have a ton of great songs — doesn’t labor too much over building its “genre blending” gems.

“You’d be surprised, no thought at all, it’s just what comes out, we feel it,” Michael Trotter Jr. told the Boston Herald. “We are very connected to our own music because if we’re not connected to it, how can you connect to it?”

The War and Treaty’s new LP “Plus One” blends genre after genre with grace, ease, and energy — a natural fusion mirrored in Michael and Tanya Trotter’s harmonies. “Tunnel Vision” marries retro soul fire with classic rock thump. “Home” is a love ballad Adele, Beyonce, or Chris Stapleton could (and should) cover. “Called You By Your Name” charges into gospel and New Orleans R&B while waving at bluegrass on the way by. The album features 15 more tracks that work wonders by combining sounds and styles.

“Heroes of the past have given us blueprints of how a song is supposed to go,” Michael said ahead of the pair’s April 6 show at the Sinclair. “Think of Nina Simone’s version of ‘I Put a Spell on You,’ or Screamin’ Jay Hawkins’ version, or ‘It’s A Man’s Man’s Man’s World’ by the late, great James Brown. When you listen to those instrumentations, why try to reinvent the wheel or fix what’s not broken.”

The Trotters’ original songs draw from these heroes’ blueprints while always sounding authentically themselves. Maybe this cocktail of past and present came with a dash of something special during the album’s recording sessions at the legendary FAME Studios in Muscle Shoals, Alabama.

“You go there to get the spirit (of these artists) inside of you,” Tanya said. “When you go into a place like FAME you can’t help but give your best when you know that Aretha Franklin sang there or that Wilson Pickett sang in there. You can’t help but give it your all because that’s what they did.”

FAME is also where many artists pioneered genre blending — Pickett hooked up with a then-unknown Duane Allman to record “Hey Jude.”

The title of the new record, “Plus One,” refers to expanding the duo’s sound through collaboration. Michael got a hand with production from some heavy hitters such as Jonathan Singleton (Luke Combs, Chase Rice), John Shanks (Stevie Nicks, Sheryl Crow), and Jesse Frasure (Jelly Roll, Kelsea Ballerini). Next to the production assist, the pair got some songwriting help from Miranda Lambert, a guest spot from virtuoso guitarist Billy Strings, and brought in its live band to fill out the sound.

“There were surprises all around,” Michael said of opening up the process. “Our band, just to see how happy they were to bring these songs to life, just the joy of everyone being together, it was a unique experience and a very cool surprise.”

You can get those kinds of cool surprises when you don’t over plan, over think, or scrutinize everything and just feel it. Well, you can if you’re The War and Treaty.

For tickets and details, visit thewarandtreaty.com