Duffy's first live performance in promotion for
Endlessly took place on the UK's
Later Live... with Jools Holland on 19 October 2010, where she performed "Well, Well, Well" as well as "Endlessly", opening and closing the show with the songs, respectively. The performance debuted Duffy's new style, heavily inspired by
Brigitte Bardot and used throughout most of the promotional campaign. Other appearances on British television included a performance of "Well, Well, Well" on
Strictly Come Dancing on 21 November 2010 with backing dancers and "DUFFY" background specially assembled for the broadcast. The same week, Duffy was interviewed and performed the song on breakfast show
This Morning as well as light news and entertainment programmes
The One Show and
T4. Duffy returned to the UK in December to perform at
Capital FM's
Jingle Bell Ball, where she sang three songs, including "Well, Well, Well" and a cover of
Mariah Carey's "
All I Want for Christmas Is You". , London. Duffy was backed by a 13-piece band. and
The Ellen DeGeneres Show (7 December 2010). Duffy was backed by a complete brass section, with
Idolator stating that "we never really tire of watching the blonde Grammy winner belt out this tale of suspicious love". In Germany, Duffy performed "Well, Well, Well" on
TV total Turmspringen, and
Popstars and in France on
Le Grand Journal. Duffy also sang the song on the finale of
The Voice of Holland on the evening of 21 January 2011. Further television performances took place in Italy, Sweden, Denmark and Spain.
The Guardian reported a six-piece band and "string sections [...] crammed on to a balcony, adding cute choreographed handclaps."
The Hollywood Reporter said that there was a 13-piece band. The second showcase was performed in New York City on 3 November 2010 at the P.C. Richard & Son Theater for
iHeartRadio. ==Track listing==