EL (electroluminescence) sound (T-Qualizer Shirts) and flash T-shirts, formed by a T-shirt and a EL luminous film, are widely used at all kinds of public occasions like evening party, concert, bar, disco dancing, dance hall, sports competition etc. It can be also applied as the clothes for company promoting products. Moreover, the logo and product brand can be made from EL (electroluminescence) flash film which can enable the effect of the promotion of products.