Priority One began releasing music as producer Hamish Cranford-Smith with the 2009 single Precision Movement on Upbeat Music. The 2013 single It's You also appeared on the label. In 2014, Priority One released Ambition as a single on Most Addictive and appeared on Liquicity Records CD compilation Galaxy Of Dreams 2. The following year brought two collaborations with TwoThirds: the Liquicity Records single City Needs Sleep and the Monstercat single Hunted. Vocalist Jonny Rose was featured on the Monstercat collaboration.
Priority One and TwoThirds also released City Needs Sleep (Fox Stevenson Remix) as a single in 2015, with Fox Stevenson and TwoThirds credited on the release. In 2016, Priority One released the 12-inch Alchemy vinyl sampler on Liquicity Records. Priority One also worked with NCT on a remix of MUZZ’s “Feeling Stronger.”