SK-crooner is a sample-based instrument designed to emulate the iconic 'human voice' vocal patch from the Casio SK-1, delivering a nostalgic and unique vocal synth experience. It captures the distinctive character of the original hardware while offering modern enhancements to expand its expressive capabilities.

The instrument provides two distinct modes: the Original mode replicates the classic sound of the Casio SK-1, while the Tone Held mode allows for sustained notes, perfect for expressive melodic lines. Users can shape their sound with an ADSR amplitude envelope, vibrato controls including rate and depth, and detailed filter settings that feature adjustable frequency and resonance.

Additional sound design options include sample rate and bit depth crushing, which add texture and grit, as well as variable portamento for smooth pitch transitions. The master volume control ensures balanced output levels, and an integrated reverb with adjustable size, mix, and width parameters adds spatial depth to the sound, making SK-crooner a distinctive tool for creative vocal synth sounds.