Saudi regime has nothing to do with Islam. They are a false flag on Islam under the guise of cleverly crafted "Wahabism".
And you might want to do some research on that starting from the story of "Lawrence of Arabia" and fall of the Ottoman Caliphate.
As for Iran, they have more to do with staying in power, just like CCP in China. What religion does CCP follow?
So let's not talk about Saudi Arabia nor Iran as having anything to do with purest version of Islam, just like we can't say every rapist is a Hindu or Indian though most rapes happen in India and through Hindus.
Now come to prohibition of Music and dress code for women.
Let's just accept that people are not all dumb. Not every one of them is a blind follower. Some of them know what they follow and know why.
So do you suppose if there was not logical reasoning for everything Islam prescribes to live a perfect way of life, there will be almost 2 billion people following it, and it would be the fastest growing religion in the world, that too in places like Europe and America among people who live free lives in free cultures and have no reason to accept something that won't be logical?
Music is prohibited because it alters the frequency your spirit resonates with the universe. It affects the balance of Spiritual energy within you, to the point your physical body starts feeling the affect. How many people you know who listen to music and the music does not affect their state of consciousness at that very moment? How many do not start experiencing the emotions that the music is trying to affect them with?
What's your research about 432 and 440 hz frequencies of sound and the music that you hear?
Music is described as a tool of devil to lure people away from what is right and into a state of emotions where they are open to be misled. Same reason there is music to induce emotions in any movie scene. There is music in war marches and preparations, and there is music in political rallies.
This will explain it further
Coming to dress code for women. Let's first understand that men are also required to follow a specific dress code and not just women. Men also cannot be starring at a woman who does not belong to them as their companion.
And any perfect way of live, if it is perfect will have something to say about every part of life with good reasoning behind it.
Women for us, are sacred and precious. Not tools or items who are to be on display and whose flesh and beauty if exposed for every one to run after. Just like your Bollywood likes to portray them.
Women are not some one who every stray dog on the street with their evil intention and eyes should be looking at harboring their evil imaginations. And being a man, I am sure you know exactly what I mean so don't even try to claim otherwise.
Our women get to choose whether they want to be seen as items of flesh and skin, and attract vile men with wrong intent, or to cover their out self, and be known for their inner beauty. For their kindness, modesty, shyness, and intellect.
While your culture and religion make them a tool to be used to be lured by or to lure others with. My Religions honors them by making them sacred, and only to be seen by those who they chose to be their life partners. Their beauty and their outer self is for their life companions.
This will explain this further