Music and technology
With today's powerful personal computers, music production is basically accessible for anyone. I should say anyone willing to spend a good deal of time learning it. With today's technology, you can have a full music production studio in software on a single iMac. If you want to record instruments live, you also need a suitable, sound-proof room and some good mics of course. Or you can hire musicians "online" to do it. Just send the backing track to a saxophonist on a different continent, and he'll send the solo track back to you in a couple of days.