Hazardous is the fourth studio album by Vanessa Amorosi, released in Australia on 6 November 2009 to critical and commercial success, debuting at number 7 on the ARIA Albums Chart and Platinum accreditation in Australia. The album's lead single, "This Is Who I Am", became Amorosi's first and only number one-charting single, reaching number 1 on the ARIA Singles Chart in its first week of release.
Hazardous was released in November 2009, less than 18 months after her previous studio album, Somewhere in the Real World. On working with songwriting team Machopsycho, she said: "It was literally pouring out of us. It's such a crazy thing when you have the right magic and chemistry going on – the songs tend to write themselves and really quickly."
"This album is so raw and edgy and out-there... it might scare people who've bought my albums in the past," she said. "The whole album is all the stuff I've never wanted to talk about, and I've only now had the courage to put it out there. I had a lot to say with this album, that's why it came so quickly. I think a lot of people thought I'd take my time again, which I was nervous about. We were going to head to Europe with the last album, but then it would've been another two years, and people would've thought 'I'm tired of buying her records, she pisses off after each one'."
Compared to the more soul and soft rock-influenced pop of Somewhere in the Real World, Hazardous features a more electropop and pop-rock sound. The album notably is Amorosi's first to feature a rap verse in one of her songs, that being Seany B's appearance in "Mr. Mysterious". Hazardous is Amorosi's second-best selling album behind her debut, The Power, debuting at number 7 on the ARIA Albums Chart on 22 November 2009. The album dropped out of the top ten the next week, spending 24 weeks in the top fifty.
Released in October 2009, the song debuted at number 1 on the Australian Singles Chart, becoming Amorosi's first-ever number one single. It spent two weeks atop the chart, and has been certified 2× platinum for sales in excess of 140,000 copies.
"Mr. Mysterious" was released in April as the album's third single. It debuted at number 65, eventually rising up the charts. On 9 May 2010, "Mr. Mysterious" had peaked at the position of number 4 on the Australian Singles Chart.
"Off on My Kiss"
Released as a digital single on 14 May 2010 in the UK. It includes an additional remix; "Off on My Kiss" (Buzz Junkies Remix).
Matthew Chisling of AllMusic lauded Hazardous, calling it "ruthless and exciting", and Amorosi's vocals "roof-raising". He also noted the album's mainstream sound, pointing out how the album was "even more radio accessible [than Somewhere in the Real World]", and said that "It's no surprise that any of the tracks could be as popular as the two first singles". Whilst he felt the album's upbeat sound "impedes on the presence of ballads as beautiful as Amorosi's previous number one single, "Perfect", he felt the album complemented Somewhere in the Real World as "two parts of a glorious release".