Baervaag is a fairly simple FM synthesizer with one carrier and one modulator. The oscillator waveforms can be modified seamlessly between sine wave to pure square wave with PWM (pulse width modulation).
Tines emulates an electric piano. With internal effects like a stereo tremolo, a multiband distortion panel and a subtle roomy reverb, Tines can sound like anything between a dreamy slick Rhodes to a nasty Wurlitzer (however, it is not designed to be a "vintage" emulation, but a modern and playable instrument). A fine-tuned velocity curve makes Tines a true joy to play on a MIDI keyboard.