Steve Jobs was one the greatest minds and innovators of our generation, but he left a lot behind when he died on Wednesday— just a day after the unveiling of the iPhone 4S.

Mr. Jobs changed the world in many ways with his ideas and creations, but one of his earliest works is sometimes overshadowed by the increasing popularity of the iPhone and iPad. When it came out almost a decade ago, iTunes wasn’t something new, yet with its simple and 99 cents per song price standard, it has grown into the largest music retailer in the world selling tens of millions of digital tracks per year.

Mr. Jobs always seemed to see an opportunity where no one else could. In the early parts of the 21st century, the World Wide Web was continuing to grow in popularity and an enormous amount of music was being leaked online. Taking this into account, Mr. Jobs used information technology to create iTunes: a cheap, legal and convenient alternative to normal retail stores.

The legal digital market is just one of many creations that can be linked to Steve Jobs and one can only wonder if anyone can replace this amazing man.