What is the ruling on rhythms that resemble prohibited music, and on the appearance of beautiful veiled girls in Islamic anasheed (chants) with the intention of conveying a message to young people?

If the intended rhythms are human voices digitally processed to resemble musical instruments, then they are considered music, and it is forbidden to listen to them or produce them. Some scholars have stated that if a human voice is altered to become a musical sound, it is considered among musical instruments (ma'azif). Furthermore, it is not permissible for a woman to appear before men while reciting a poem, due to the potential for fitna (temptation/strife) in that.