After high school Gunn sidestepped music for a year, focusing his efforts towards modeling and acting which led to a small role on the national TV show Freddy's Nightmares as Monkey Puke Stone[1] on season 2 episode 11 "Dreams That Kill".

With national radio starting to escalate and CD sales starting to occur, Gunn received interest from nature retail chain Natural Wonders, which led him to a record deal with Sausalito, California-based instrumental music label Real Music.

[5] Outside of Real Music and the "National Park Series", Gunn has gone on to release numerous albums influenced by the beauty of America's landscape and parks, such as Return to Grand Canyon (1999), Through the Great Smoky Mountains (2002), Journey to Yellowstone (2003), and Beyond Grand Canyon (2006).

It was also on his 14th album, Thirty-One Nights, that he heavily incorporated this Latin influence working with Flamenco guitarist, Chris Fossek.

[9] Since 1991, Gunn has sold millions of copies of his instrumental music albums, an impressive feat considering that the marketing of his albums have mostly bypassed the traditional route of radio and mainstream outlets,[10] finding large success through niche retail chains such as the Nature Company, Natural Wonders, and gift stores throughout the National Parks.

Gunn began combining his electronic sound with his instrumental roots[11] in 2015 with the release of Under the Influence of Music.

In his subsequent singles, Ibiza Sunset and Saint Lucia, one can hear his classic instrumental "Nicholas Gunn" sound moving into a more Ambient / Electronic space.

In 2018, Gunn continued this transition towards a more electronic sound and began introducing his own style of vocals and lyric writing.

Making a huge leap with his release schedule in 2022 Gunn released multiple new singles collaborating with artists such as Dave Neven, Derek Luttrell, RAEYA, Diana Miro, Protoculture, Jarod Glawe and Richard Durand with his collaboration, Love You More with Dave Neven, receiving #43 on the coveted A State of Trance top 50.

Remixes from industry dance legends such as Richard Durand and Giuseppe Ottaviani have also gone on to become favorites on A State of Trance which is followed by over 40 million listeners per week.

Gunn has emerged as one of the leading songwriters and lyricists within the electronic music space, writing music behind the scenes for such renowned artists as Armin van Buuren, Aly & Fila, Luke Bond, Andrew Rayel, C-systems, Harshil Kamdar and many more.

In 2021 Gunn's song, For All Time (feat Kazi Jay)[13] was voted Tune of the Year[14] by fans on A State of Trance.

[17] Gunn also named the American Lung Association as a beneficiary of a portion of sales from his album Breathe.