Answered by Sayyidi Habib Umar bin Hafiz (may Allah protect him and benefit us by him)
Can we use computer generated music in order to encourage people to attend our gatherings?
If the sounds generated resemble instruments which are forbidden (such as the flute) they should be avoided but if they resemble instruments which are permissible (such as drums) this is acceptable. We should not hasten to attract people using means unless they are clearly permissible for people will attend your gatherings in due course without the use of these means. Showing good character, reciting with beautiful voices and making our gatherings beautiful are prophetic means of calling people to Allah and are effective.