iShop and Mixup are two retail store chains forming Promotora Musical, S.A. de C.V. (more commonly known as iShopMixup):[2] iShop sells electronics and Mixup sells music in stores across Mexico, some of which are joint.

Mixup was founded in 1989. iShop Mixup is headed by Patricio Slim Domit, son of Carlos Slim and Head of Grupo Sanborns, and has about 2,000 employees.

[3][4] Mixup music stores sell CDs and Vinyl, video games, Blu-ray, books, Cassette, LP, VHS and DVDs.

In 1994, when Slim acquired 51% of the stock that ran the shops, and with this established Promotora Musical S. A. de C. V. In 2020 iShop and Mixup experienced the lowest decline in sales of Grupo Sanborns companies (less than Sanborns and Sears Mexico).

In the first quarter of 2022, iShop and Mixup represent 30% of total Grupo Sanborns sales, with more than 5 billion pesos in quarterly revenue (roughly US$300 million), behind only Sears and more than Sanborns itself.