$3.$ Raptor was a successful singing group that contracted to perform at the $$Falcon Wings$$ music concert. $$Raptor was aware that the promoter would sustain a substantial loss if the group failed to perform. $$The members of the group were stricken with a virus that confined them to their beds. $$The promoter sued for breach of contract. $$What is the probable result? $$Explain you answer.