As a solo artist, New York-based Sam Evian makes music that blends the smooth sounds of ’70s soft rock with the ragged edges of 21st-century indie. As a producer, he has helped artists like Widowspeak and Big Thief realize their full potential. Turning his house into a home away from home for his clients has helped encourage that homespun feel, as have his instincts for crafting expansive yet detailed sonic landscapes.