There's a lot of factors to consider, but as a music producer, I'd recommend looking for something with a proper Intel Core i7 processor, *WITHOUT* the "U" designation after it. 8-16 GB RAM, SSD if he can afford it, spacious 7200 RPM HDD if not. ASUS, Gigabyte, MSI, Razer and others make good gaming laptops that would also double as production laptops effectively, or he can look more on the enterprise side of things (Dell, HP, Lenovo make decent workstation laptops, as long as you avoid their consumer grade stuff). There's also some manufacturers that do custom laptops--something like this: http://www.xoticpc.com/sager-np8171-clevo-p670rp6.html might do the trick.