The classic sync lead: +ENV OUT into osc 2 PITCH IN sweeps the synced osc 2 down from 18 semitones above on every note, a vocal tearing attack that settles as the envelope decays. Mod wheel for vibrato. Macros: Glide, Decay, Bite. Macro 8, Master, is the output level.

Semi-modular monophonic synth
Sweet Berta
One voice, patched your way. Two oscillators, a ladder filter, a sequencer and an arpeggiator, a patch bay of cables, and a spring reverb.
The launch
Free to claimOpens: October 21, 2026 at 12:00 AM UTC. No closing date yet.
Sweet Berta installs with the Ozner Audio app and a free account. Get the app
The gallery
Every side of the panel, as the plugin draws it1–24 of 55
Two detuned saws through a moderately resonant ladder with key tracking, legato glide and vibrato on the mod wheel: a singing, expressive monophonic lead. Macros: Bright, Bite, Vibrato, Glide, Thick, Attack, Tail and Master.
Osc 1's narrow pulse (measured at 16% on the hardware) with osc 2's square an octave up: a reedy, nasal lead. The mod wheel adds pulse-width modulation to both. Macros: Glide, Bright, Bite. Macro 8, Master, is the output level.
A bright, tearing arpeggio climbing three octaves in sixteenths: osc 2 hard-synced to osc 1, a slow LFO sweeping its tone so the pattern keeps changing colour, with a ping-pong echo in dotted eighths. Hold a triad high up and ride the mod wheel for vibrato. Macros: Sweep, Cutoff, Echo, Gate. Macro 8, Master, is the output level.
The handheld-game chord: a thin pulse running through whatever you hold in thirty-second notes, so a held triad shimmers into one buzzing chord. Hold triads and change them on the beat; the mod wheel adds a game-style vibrato. Macros: Chop, Tone, Vibrato, Echo. Macro 8, Master, is the output level.
A soaring lead that spirals: two saws a fifth apart, each step gliding into the next in eighth-note triplets, up two octaves and back down, through a chorus, a long echo and a hall. Hold two or three notes and let it sing; the mod wheel brings in vibrato. Macros: Glide, Bright, Space, Vibrato. Macro 8, Master, is the output level.
A snarling sync riff in sixteenths: osc 2 hard-synced and swept down from high on every step, so each note tears in and settles, with a dotted-eighth echo trailing it. Hold A3 for the riff as written and move it with your other hand. Macros: Tear, Cutoff, Echo, Gate. Macro 8, Master, is the output level.
A singing synth-pop hook in eighths, square and saw slightly apart, the tied notes gliding into each other, in a light chorus, an echo and a plate. Hold C4 for the hook as written and change key for the next chord. Macros: Bright, Slide, Echo, Space. Macro 8, Master, is the output level.
A funky talking lead: every accented step opens the resonant filter like a wah pedal stamped down, the rest stay vocal and nasal. Hold E3 or E4 for the line as written, play other keys for the changes, and ride Cutoff. Macros: Cutoff, Resonance, Room, Gate. Macro 8, Master, is the output level.
A singing saw lead with a gentle vibrato that carries a slow minor melody in three phrases, one in each sequence, in a hall with a quarter-note echo. Hold D4 for it as written; switch Seq 1, 2 and 3 to move through the phrases, each landing on the next bar. Macros: Bright, Vibrato, Echo, Space. Macro 8, Master, is the output level.
A saw lead with a second voice a major tenth above it, an octave and a major third, a spacing the old seven-semitone Detune could not reach: Range at 18 puts the knob's end past it. Bright and singing, with vibrato on the mod wheel. Macros: Tenth, Bright, Space. Macro 8, Master, is the output level.
A saw lead that climbs by interval: osc 2 starts a fifth above and the Interval macro runs its Detune up to an octave and a fifth, nineteen semitones, in one sweep, with the knob's travel set to Range 19. Turn it slowly for a rising harmony, fast for a siren of fifths. Macros: Interval, Cutoff, Space. Macro 8, Master, is the output level.
A soaring saw lead flanged by Jacuzza's jets, a deep rush climbing and falling under every note. Take-Off does nothing until halfway, then holds Surge: the swirl speeds up and the jets deepen over a second and a half, then settle when it comes back down. Learn it to the mod wheel and pull it up for the take-off. Macros: Take-Off, Jets, Swirl, Bright, Glide, Space. Macro 8, Master, is the output level.
The fat solo lead: two saws, one an octave down and a little detuned, pushed into the mixer's soft clip and through a resonant ladder that tracks the keys. Play single-note lines and lean on held notes; overlapping notes glide, the mod wheel adds vibrato. Macros: Bright, Bite, Vibrato, Glide, Room. Macro 8, Master, is the output level.
Two squares an octave apart through the gentler 12 dB slope: a hollow, woody lead with a little chorus around it. Clean, singable melodies sit well here; the mod wheel adds vibrato. Macros: Bright, Chorus, Vibrato, Release. Macro 8, Master, is the output level.
A saw and a narrow pulse into Puzz's germanium fuzz, with a short slap echo behind: thick, ragged and sustaining, like a fuzz guitar solo. Hold notes and let them bloom; Cleanup rolls the fuzz back for a clearer verse. Macros: Fuzz, Cleanup, Echo, Bright. Macro 8, Master, is the output level.
A square with a saw an octave above it, into Crank's amp with its mids filled in: a thick, forward rock lead that bites harder the harder you play the filter. Play bluesy lines and bend into notes. Macros: Gain, Tone, Bright, Room. Macro 8, Master, is the output level.
A narrow pulse squeezed between the high-pass filter and a resonant 12 dB ladder: a thin, reedy lead like a double reed. Mix Out runs through the HPF into the ladder. Play it legato in the middle register; the mod wheel adds vibrato. Macros: Nasal, Bright, Vibrato. Macro 8, Master, is the output level.
A soft triangle with hybrid noise breathing under it, a slow swell and a gentle vibrato that is always on, in a bright plate: a flute-like lead. Play slow, legato melodies and let each note bloom. Macros: Breath, Air, Attack, Space. Macro 8, Master, is the output level.
A saw over a square sub, a resonant ladder jittered by sample-and-hold into its cutoff, and Zest's dirt on top: a gritty, restless lead that never sits still. Hold notes to hear the flutter; Flutter speeds the random steps up. Macros: Flutter, Bite, Dirt, Bright. Macro 8, Master, is the output level.
The big prog portamento lead: two saws an octave apart that glide on every note, a slow swell, then echoes ping-ponging into a long hall. Play wide leaps slowly and let the glide carry you; add vibrato with the mod wheel on the held notes. Macros: Glide, Vibrato, Bright, Space. Macro 8, Master, is the output level.
A singing saw lead with a gentle attack, a vibrato that is always on, and a slide between overlapping notes: an operatic, vocal line. Play legato and slow, and let each note swell into its vibrato. Macros: Attack, Bright, Glide, Chorus. Macro 8, Master, is the output level.
A pure triangle up high with a lazy vibrato and a slow slide, echoing into a hall: a whistled tune across an empty landscape. Play sparse melodies in the upper middle of the keyboard, overlapping notes to slide. Macros: Glide, Echo, Space. Macro 8, Master, is the output level.
Two saws a fifth apart, sliding together between overlapping notes, through a rich chorus: a big parallel-fifths lead. Play simple melodies and let the fifths do the harmony; the mod wheel adds vibrato. Macros: Glide, Fifth, Chorus, Bright. Macro 8, Master, is the output level.

Hybrid