The band suspects Taki played favorites in choosing Reina in the auditions. Noticing the band's rising distrust of Taki and Reina, he makes a proposal.
if you know the person, 
I think it makes a difference...
لا ريب أنّ معرفة الشخص مسبقاً لها تأثير على الأمر
macht es doch bestimmt einen Unterschied,
wenn du die Person kennst.
influye conocer a la persona.
ça change la donne 
s’il la connaît.
conoscere una persona
influisce comunque, non trovi?
se você conhece a pessoa, eu acho
que faria alguma diferença...