Most recently Paul has realised one of his dreams, by releasing the much anticipated collaboration ‘Rainforest / What’s Going On’. No easy feat, the negotiations to use the late Marvin Gaye’s vocals took Hardcastle almost a year. But, perhaps due to the message in both ‘19’ and ‘What’s Going On’, and their comment on the effect of war, which is still so prevalent today, Marvin Gaye’s family finally granted their blessing. The single was on the A list at Smooth Radio UK for 15 weeks and made the top 5 on Billboard’s Jazz charts.