Mayhem received more promotion than
Love Tattoo, being better financed than its predecessor. Following performances on 30 January 2010 at the
52nd Grammy Awards with Jeff Beck and at major music festivals, such as the
Eurosonic Festival in Groningen, Netherlands, promotion for
Mayhem began with the release of the first of the album's three singles, "
Psycho", on 27 June.
Mayhem was released in Ireland on 3 September 2010 and in the United Kingdom on 4 October 2010 after delays. Between the two release dates, the title single "
Mayhem", was released on 13 September. Sneaky Freak was also released as an
iTunes free single of the week on 9 September. On the album's release night, May appeared on
The Late Late Show performing the title track and being interviewed by host
Ryan Tubridy and the following day performed at
Electric Picnic. The following week, the album entered the charts at No.1 and
Love Tattoo remained at No. 4, also going triple platinum. Less than a month later, May began a short tour of the United Kingdom which included five shows Her final performance of the tour was an appearance on
Later... with Jools Holland where she first gained prominence in the United Kingdom. Recorded on 12 October and broadcast on 15 October, May performed "Mayhem", "Psycho" and "Tainted Love." The same week, May also appeared as a guest on satirical pop music quiz
Never Mind the Buzzcocks. Despite the extensive promotion, the album initially failed to chart in the United Kingdom. The album's third single, "
Kentish Town Waltz", was released on 15 November and the following month, May returned to Ireland. She appeared on
The Saturday Night Show on 11 December and performed "Kentish Town Waltz" and "
Santa Claus Is Back in Town", Following her appearance, May performed a four-night sold-out stay at Dublin's
Olympia Theatre from 15 to 18 December. The album's fourth, and possibly final, single "
Inside Out" was released on 16 January 2011 and
Mayhem entered the United Kingdom albums chart on the same day. Two weeks later,
Mayhem peaked at No. 7 in the United Kingdom charts, and is May's best-selling album to date. An expanded version of the album entitled
More Mayhem was released in September 2011, featuring six bonus tracks. ==Critical reception==