If a singer hasn’t been on the road before it is easy for them to blow there voice after a few hours of singing. Nevermind, the pressure when some producers make the poor call of doing all of the vocals at the end of a record. While some more experienced singers can sing for 14 hours in a day this is rare and often times the smartest thing to do when making a record with a singer who hasn’t yet built up their muscle for singing is to schedule a few hours at the end end of each night for them to sing. On record where a lot of screaming and belting is involved I will often get the singer started working the day after the drums are done for a few hours each night. This ensures that we have time to get a great vocal performance and they do not need to be stressed if their voice isn’t up to par one day. You will also remain less stressed since you won’t have to worry about delivering a record late and over-budget.