Julia Adamson (also known as Julia Nagle from 1988-2006) (born September 30, 1960, Peterborough, Ontario, Canada) is a composer/musician and current label manager of Invisiblegirl Records. In 1967 her family moved to Manchester, England.
In 1971 she recorded with St Winifreds Choir on the school's first album of modern hymns. In 1977 she played in punk group Blackout alongside Tony Ogden and Gordon King. She joined the group Illustration in 1979 and recorded material with Martin Hannett as producer for Some Bizzare Records.
Adamson worked as Hannett's personal assistant from 1981 until 1983. She was employed as a tape op and sound engineer at Strawberry Studios from 1984 to 1990.
In 1986 she formed the Manchester group What? Noise with her husband Chris Nagle (married 1988-1994) and was signed to One Little Indian Records, where she contributed to the album Fat and the EP Vein.
Adamson was a member of the alternative rock band The Fall between 1995 and 2001, playing keyboards, guitar and computers. She contributed to The Light User Syndrome, Levitate, The Marshall Suite and The Unutterable. Writing credits include the singles "The Masquerade" and "Touch Sensitive", later used in an advert for Vauxhall Corsa cars (2003–2006). Books about The Fall include Simon Fords 'Hip Priest' although others are libelous about Nagle indirectly blaming her for the 1998 split in the group. The Fall had debt problems that caused the split, incurred before Nagle joined the group (bankruptcy and VAT issues).
Since 2001 Adamson has continued to write and perform under the name Invisiblegirl. and released the single "Fun" in September 2006. Invisiblegirl has now expanded into Invisiblegirl Music Publishing Limited and Invisiblegirl records with over 30 releases.