That four-track still doing the job for you? Here’s what the heavy hitters say your demo needs.

Albert Castillo infuses his mixes with a personal synth touch.

Muse Research’s Receptor runs virtual instruments like a computer, but plays like a keyboard. Here are 13 easy but powerful tips on how to set it up for your next gig.

Here’s some advice on using eSession, given by the musicians who worked with Michael Gallant on “Leave It All Behind.”

Scenario 1: You’ve nearly finished producing a killer track. All it needs is a screaming eight-bar organ solo, but when it comes to your keyboard work, you’re more of a Trent Reznor than a Joey Defranceso. Oh, and your deadline is ...