Indeed, while transitioning from the calling to tracking methods, the airplay and sales charts already monitored by Nielsen and the Hot then still using the calling system often did not match for instance Paula Abdul 's " Promise of a New Day " and Roxette 's " Fading Like a Flower " reached much higher Hot peaks than their actual sales and airplay would have allowed them to. Rumors had been circulating that Mercury had AIDS and he confirmed it to the press a day before his death,  but the death comes as a shock to millions of fans and the music industry. The May 25 issue of Billboard published Billboard and Country Album charts based on SoundScan "piece count data," and the first Hot chart to debut with the system was released on November 30, It has now spent a total of 14 weeks on top of the UK charts. Although most record company executives conceded that the new method was far more accurate than the old, the chart's volatility and its geographical balance initially caused deep concern, before the change and the market shifts it brought about were accepted across the industry. When it came to music, was one of the most successful years of the s. On the other side of the Atlantic, New York death metal band Suffocation release their debut full-length Effigy of the Forgotten , often considered one of the most influential extreme metal albums ever recorded. U2 release their seventh album Achtung Baby , considered by many of their fans to be their best album. Trance music rises to prominence in the underground dance scene of Frankfurt , Germany, pioneered by such producers as Dance 2 Trance and Resistance D. Previously, Billboard tracked sales by calling stores across the U. Tower Records , the country's second-largest retail chain, was originally not included in the sample because its stores are equipped with different technology to measure sales. On 24 November, Queen frontman Freddie Mercury died. The track spent eleven weeks at No. Massive Attack 's Blue Lines , while unique at the time, pioneers the sound that would eventually become known as trip hop. It is also the only time a single has gone to number one more than once on the UK Christmas charts. The remaining members of Queen form the Mercury Phoenix Trust and the following year, a tribute concert is staged in Wembley Stadium. Def Leppard 's next album Adrenalize , released in March , would go on to reach multi-platinum status and prove to be the last major commercial success for s hair metal.