Shortly after their marriage in 2012, Lauren and Daniel made the decision to leave their odd jobs and pursue music full-time. They dedicated their days to performing Daniel’s songs for various audiences, exploring new writing avenues together. This period marked Lauren’s first foray into songwriting, as Daniel encouraged her to discover her unique voice in the creative process. The couple continuously brainstormed innovative ways to merge their artistic talents; this included integrating an illuminated installation and hand-bound lyric books into their live performances, reflecting Lauren’s background in visual arts. These early collaborations led to the formation of Lowland Hum, and by the end of their first year of marriage, they embarked on the creation of their debut album, Native Air.

The recording of Native Air took place in the basement of Daniel’s childhood home, becoming a symbol of their integration as a couple. Many songs on the album delve into themes of identity, capturing the couple’s journey of merging their lives and creative visions. This year was characterized by their efforts to grow as individuals while nurturing their unity. Released in the fall of 2013, Native Air received unexpected acclaim, with critics praising its heartfelt lyrics, minimalist arrangements, and ethereal harmonies. Following its release, the duo spent the latter part of 2013 and much of 2014 on an extensive tour across the United States, fitting in recording sessions during their travels. In the fall of 2014, they released the EP Four Sisters, accompanied by videos crafted by Lauren using public domain home movies.

In 2015, fresh off the success of Four Sisters, Lowland Hum prepared to unveil their sophomore full-length album, a self-titled collection of songs written throughout the whirlwind of the previous year. While many of the tracks began with just an acoustic guitar and two voices, they expanded in complexity during recording at a small studio near Charlottesville, Virginia. Daniel and Lauren collaborated with friends Edd Kerr, Joseph Dickey, and Dan Faust (engineer, bassist, and drummer, respectively) to realize the fuller sound they envisioned. Lowland Hum was released worldwide on April 14, 2015, and debuted as an NPR Music First Listen stream. Following the album's release, the duo hit the road, initially supported by a rhythm section for two months, touring extensively across the East Coast and Midwest before continuing as a duo for the remainder of the year. By the end of 2015, Lowland Hum expanded their team by signing with the San Diego-based indie label Randm Records and joining the Concerted Efforts booking roster. They continued to tour through the first half of 2016 while also working on material for their next record.