Having served over 1.5 billion impressions to retail campaigns since the start of November, it seemed like a good time to dig deeper. Over the past week, Rocket Fuel delivered 52.3 million impressions for a major retail chain. During that time, converters have been all about the music—interests in Pop, Hip-Hop, World Music, and Streaming Music have been among the biggest drivers in online conversions, with younger consumers (18-29) driving the bulk of campaign conversions. These typically occurred in the evening, between 6 p.m. and midnight. Numbers like this are enough to make any retailer sing their way through the holidays.