This list assumes, of course, that you already have a computer. You don't need the fastest computer to record and mix music, but it should be reasonably fast. Anything with a Core i- or even Core 2-series processor should do the trick. Just don't use a netbook.
Ashford & Simpson also had success writing for themselves: Perhaps the best-known song they sang was the 1980s hit Solid As A Rock.. His music is unmatched in terms of great songwriting, Verdine White of Earth, Wind and Fire said after learning of his friend's death.
Roar is the first single off Katy Perry's third LP, Prism. Its official release date is Monday, August 12, 2013, although the final version of the song leaked on August 10 and was played on the same day by a number of radio stations across the US.