Now Playing: 1-30-13 Marketplace Tech: Happy Birthday, Midi and the New MS Office

A protocol that lets musical instruments talk to and trigger one another turns 30 years old today. MIDI is still used by the likes of dance-punk band !!!. It’s inventor Dave Smith explains its use. A new version of Microsoft Office turns purchasers into subscribers. The IRS has had a Tumblr for months, but it’s just now getting noticed.