Piano Companion is a music theory reference app for songwriters, producers, teachers, and students. Look up any of 1,500+ chords or 10,000+ scales instantly, build progressions, and explore harmony on iOS, Android, and Mac.


Whether you're stuck on a progression, blanking on a scale name, or just exploring — Piano Companion gives you the answer in seconds. Press the keys you know, and it tells you what you're playing.
Search by name or tap the keys you know. Piano Companion identifies what you're playing — even from a MIDI keyboard.
The Chord Progression Builder suggests chords that fit your key. Experiment with patterns, listen back, and find what sounds right.
See notes on the grand staff, fingering for both hands, intervals, degrees, and compatible scales — all in context, not abstract textbook diagrams.
The Evolution of Action Cinema: A Deep Dive into "Police Story" and its Impact on the Genre
: Inspector Chan Ka-Kui (Jackie Chan) must clear his name after being framed for murder while protecting a key witness against a drug lord. Police Story 2 (1988)
Over the years, the Police Story franchise expanded to include:
Until there is a centralized, affordable way for audiences to access dubbed classics legally, the shadow of Isaidub will continue to loom large. For now, the story of "Police Story" on Isaidub remains a digital paradox—a testament to the enduring love for action cinema, marred by the illicit nature of how it is consumed.
The Evolution of Action Cinema: A Deep Dive into "Police Story" and its Impact on the Genre
: Inspector Chan Ka-Kui (Jackie Chan) must clear his name after being framed for murder while protecting a key witness against a drug lord. Police Story 2 (1988) police story isaidub
Over the years, the Police Story franchise expanded to include: The Evolution of Action Cinema: A Deep Dive
Until there is a centralized, affordable way for audiences to access dubbed classics legally, the shadow of Isaidub will continue to loom large. For now, the story of "Police Story" on Isaidub remains a digital paradox—a testament to the enduring love for action cinema, marred by the illicit nature of how it is consumed. The Subscriber Fatigue: In India, a household might