That might well be the case of the vast majority of wannabe warblers, but there are exceptions to the rule.
When Julien Doré won the fifth edition of the once-defunct but since-revived "Nouvelle Star" (the French version of Pop Idol) in 2007 he had spent a season interpreting other people's songs and doing so with a refreshing touch of creativity.
Julien Doré (screenshot TV5 Monde "Acoustic" - September 2014)
Few, who followed his progress through the competition, will forget his rocked-up rendition of Alizée's "Moi...Lolita", the debut single in 2000 from the then Mylène Farmer managed 15-year-old. .
Doré went further later in the competition with another unlikely rocked-up (but this time acoustic) version of a pop giant when he transformed Britney Spear's quintessential international Disney break-out teen hit "Baby One More Time" into...well, something else.
OK OK so most definitely not his genre, but it got Doré noticed and it was clear that he had a talent, was prepared to take risks and didn't appear to take the whole talent show experience too seriously.
Plus he had stage presence, charm, charisma and his very distinctive style and musicality.
And that has served him well ever since, with each of his three albums - "Ersatz" in 2008, "Bichon" in 2011 and most recently the critically acclaimed "Love" (guess the theme) in 2013 - reflecting his musical eclecticism
Just as important, in interviews, Doré doesn't appear to come across as having been bitten by the star bug, his concerts (see a list here for upcoming dates) are a treat for fans as the "master of the ukele" (the instrument with which he auditioned for "Nouvelle Star") draws in a crowd of all ages.
If the excellent "Paris-Seychelles" - the first track to be lifted from "Love" as a single - whetted your appetite, then ""Chou Wasabi" si probably its natural successor - lyrically and melodically - as well as the video which features the same "young Doré double".
Australian-born Micky Green joins Doré for the duet which "evokes a relationship reaching its end"
And its quite simply hauntingly beautiful.