There is no tip 24. By this point in the session, either...
a - The recording has been successfully completed and is "in the can," or
b - The recording session has been suspended due to "ill health" or a previous commitment, or
c - The band has broken up, or
d - The engineer has quit, or
e - The producer has quit, or
f - The producer has fired the engineer, or
g - The band has fired the producer
h - All of the above and the record will never see the light of day.