Women’s poetry

In the last column (682), you wrote: “Think about the question of attending a singer’s performance. An ordinary Haredi rabbi would certainly forbid it outright. Even if the questioner explains to him that he enjoys the musical quality of her singing, that rabbi would certainly reject it outright and think that he is just trying to find a permit. It is clear to that rabbi that this is a desire that has a sexual component, otherwise why would anyone want to hear a singer? He has never heard a singer and does not understand the musical value that people see in such singing. Therefore, from his perspective, hearing a singer is certainly a desire to arouse forbidden thoughts.”
In your opinion, is there a reason not to outright ban participation in a female singer’s performance? If so, why and can you provide sources? Many thanks.