Question for a Audio guru

[VaShaun Jones]

Hello and good day,
My son is sighted and plays the keys, piano and organ. He will be  
opening a studio in the summer and I will be assisting with the  
computer and software where I can. I wanted to know what is the best  
Mac notebook for audio production as well as software? The software  
doesn't have to be fully accessible because I will have lots of help,  
but I do want any professional suggestions. Please include why you  
recommend what you suggest. Thanks