Having enjoyed a successful modelling career in Paris and New York in the early 1970s, Jones released a series of singles throughout 1975–1976. None of them, however, managed to succeed on the mainstream charts. Jones secured a record deal with Island Records in 1977 and found wider recognition only with her debut Island album, Portfolio.
The album was recorded at mixed in Sigma Sound Studios in Philadelphia, and released in autumn 1977 as the first of three albums made with the legendary disco record producer Tom Moulton. Side one of the original vinyl album is a continuous disco medleycovering three songs from Broadway musicals, "Send in the Clowns" by Stephen Sondheim from A Little Night Music, "What I Did for Love" from A Chorus Line and "Tomorrow" from Annie. Side two opens with Jones' very personal re-interpretation of Édith Piaf's "La Vie en rose" and continues with three new recordings, two of Jones co-wrote. The Italian release would omit "Sorry" and "That's the Trouble", adding an extended, over 7-minute-long version of "I Need a Man" instead. The album's artwork was designed by Richard Bernstein, an artist working for Interview, who would later contribute artwork to Jones' next two records; the singer would team up with him again for the 1986 album Inside Story.
Singles
"I Need a Man" was Jones' debut single, originally released in 1975 by the minor French label Orfeus. It failed to make any chart impact until two years later, when it was re-mixed and released via the Beam Junction label, becoming a number-one dance hit in the US and introducing Jones to club audiences, primarily gay. The second single, "Sorry", was released a year prior to the Portfolio album, and was a modest success on the US singles chart. Its B-side track, "That's the Trouble", also received a separate A-side release. Both songs were Jones' first forays into songwriting. "La Vie en rose" was released as a single in autumn 1977 and became the biggest hit from Portfolio, having charted in the French and Italian top 5. When re-released in 1983, it reached the top 5 in the Netherlands. "What I Did for Love" became a top 10 dance hit in the US.
The album received unfavorable reviews from music critics. Andrew Hamilton from AllMusic website gave the album two out of five stars and wrote that "though polished [the album] tracks don't jump out at you" and conclude that it was more a "producer's album." He also gave credit to her because "she gives credence to old fuddies" like "Send in the Clowns," "La Vie en Rose" and "I Need a Man," whose according to him "displays a vulnerable Jones".
Rolling Stone magazine gave the album one out of five stars.
Commercial performance
Portfolio reached number 52 on the Black Albums Chart in the US, while climbing to number 109 on Billboard's mainstream albums chart. It garnered more attention in Europe, entering the top 10 in both Italy in early 1978 and the Netherlands in 1983.
Side one's tracks are a non-stop medley, with its total playing time being 18:36.
Italian releases of the record feature the same tracklist as the original release, but exclude "Sorry" and "That's the Trouble" while "I Need a Man" appears as a 7:30 minutes extended mix.