The song ignites immediately. Too bad that this is reflected in the price, but five stars for the first solo hit of Pharrell Williams, who was more of a songwriter and / or producer else. The text has simple metaphors like the house without a roof, also warns the opposite, to become involved. Known manner is indeed a time-Happy just mentally ill bestowed. - The music is grooving easy. Brilliant. This song will hopefully displace in the US, the happy pills allenorts because it drives immediately the mood high and yet survive the years. Four and a half stars.