While talk of notation is in the air, it’s worth noting that sheet music has a chance to make a comeback in the digital age. After all, passive musical consumption seems to have already peaked some time in the now-past 20th Century. The desire for fans to be able to play the music they love is strong as ever, evidenced by the popularity of the Rock Band and Guitar Hero phenomenon. If you really wanted to be optimistic, you could interpret the downturn in recorded music as a positive trend back to live music and personal performance – the very musical trends that had been eclipsed by recording in the first place.

As with digital music downloads, the hope in digital sheet music is, naturally, being able to connect fans with the growing variety of music they might want to play. Brick and mortar stores where you can buy sheet music have already largely gone the way of the dodo. Here in New York, the big victim this spring is the storied classical music supply around the corner from Carnegie Hall: Joseph Patelson Music House has gone online-only. Music recording can count on some sort of transition to new formats; music publishing has to find a way to rise from the ashes of a business that’s had to deal with the invention of the Internet and records.

Selling MP3s? Try Sheet Music, Too, Says TuneCore

Last week, the latest announcement on this frontier was a partnership between TuneCore and Musicnotes.com. That brings together two real success stories in this arena. TuneCore is an affordable, flat-fee service that distributes music across different online stores (iTunes, eMusic, Amazon MP3); they’ve worked with everyone from indie artists to Areha Franklin, Beck, Bjork, and Cirque du Soleil (among others). Talk long tail: they release more music per day than any single major does in a year.

Musicnotes is interesting in that their catalog of on-demand online sheet music, topping about 100,000 titles, has been accelerating in sales – even as the economic recession takes its toll on the rest of the industry. They also boast 100,000 daily visitors to their site, thanks in part to partnerships with big-name publishers like Alfred, Faber, Disney, and Universal.

So, how do you bridge downloadable tracks with scores?