I have studied & taught voice/singing/coaching for many years. Screaming & yelling are quite damaging to the vocal folds(not at all cords-they are folds of tissue which slam together repeatedly many times per second when one vocalizes, therefore if one screams, they slam too much causing damage.), as is alcohol. Home remedies will not repair or fix this. As mentioned above, there is no way to repair this when the damage is inflicted over & over, except for possible surgery to remove scar tissure or growths which often occur due to overuse/damage to the vocal folds. Seek a professional to coach you as to how to vocalize correctly & warm up your voice before performances. Now, you might consider why you think you must scream in order to create what you & your friends think of as "music."