Charlie Puth built his reputation writing and producing for other people before deciding to keep the best of it, and Voicenotes is where that shows. He wrote, produced and engineered almost the whole thing himself, leaning hard on eighties funk and blue-eyed soul rather than the radio pop of his debut. Attention rides a bassline that does most of the work, How Long is all clean guitar and falsetto, and Boy is the one people go back to. Kehlani, Boyz II Men and James Taylor turn up. Includes a download code.