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.
You play as Alcatraz, a marine who inherits the cutting-edge Nanosuit 2.0. This advanced exoskeleton is your ultimate weapon, allowing you to adapt to any combat situation in real-time through distinct modes:
: Unofficial compressed downloads from unverified sources often carry risks of malware or corrupted game files. It is generally safer to use verified digital storefronts.
Often dubbed the "显卡杀手" (Graphics Card Killer) of its era, Crysis 2 is a first-person shooter game developed by German studio Crytek and published by Electronic Arts (EA). Released on March 22, 2011, for Microsoft Windows, PlayStation 3, and Xbox 360, it is the second installment in the Crysis trilogy.
: Increased strength and speed for vertical traversal and melee. Crysis 2 Pc Download Highly Compressed
Highly compressed games take longer to install because the files must expand.
: If your PC specs are the issue rather than your internet speed, playing via a cloud service avoids the need for a large local download entirely. Recommendation:
If you are looking for the modern experience, consider looking at the Crysis 2 Remastered edition on GOG.com or Crysis 2 Remastered on Steam , which support modern hardware and higher resolutions. You play as Alcatraz, a marine who inherits
Whatever you choose, always prioritize your digital security. Enjoy the fight, soldier.
Unlike the first game's more open-ended island environments, Crysis 2 is a more linear, but highly vertical, experience. The ruined skyscrapers of New York provide a playground for you to use your Nanosuit's agility to gain a tactical advantage over your enemies—whether human soldiers of the private military corporation Crynet or the alien Ceph themselves.
Many sites are filled with fake buttons, malware, or outdated links. Proceed with caution. Often dubbed the "显卡杀手" (Graphics Card Killer) of
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These sources generally offer reliable options that are safe and fully functional. Installation Steps for Compressed Games
Considering the game's age and the frequent deep discounts on official platforms, the small amount of money spent is a fair price for peace of mind and a smooth, secure gaming experience. If you have the hardware, the version is the definitive way to experience the battle for New York. If you want to test your PC, the original 2011 version is still a fantastic shooter, and it's widely available for a very reasonable price.
Piano Companion is a music theory reference app that gives musicians instant access to 1,500+ chords with inversions, 10,000+ scales, a chord progression builder, reverse chord lookup, and an interactive circle of fifths. It is available on iOS, Android, and macOS, and supports 40+ languages. Whether you are a beginner learning your first chords or a professional songwriter sketching ideas, Piano Companion provides the answers you need in seconds.
Tap the piano keys you know on screen or connect a MIDI keyboard, and Piano Companion identifies every matching chord and scale in real time. This is especially useful when you hear a chord in a song but don't know its name — just play the notes and the app tells you what they form.
Piano Companion is free to download on iOS, Android, and macOS. The free version includes core chord and scale lookups. A Pro upgrade unlocks additional features including all chord inversions, the full scale library, the chord progression builder, and the circle of fifths tool.
Yes. Connect any MIDI keyboard to your device and Piano Companion will detect the notes you play, identifying chords and scales in real time. This works on iOS (via Camera Connection Kit or Bluetooth MIDI), Android (via USB OTG), and macOS (via USB or Bluetooth).
Piano Companion is available on iPhone, iPad, Android phones and tablets, and macOS. Your chord libraries sync across devices, so you can start on your phone and continue on your Mac.
Available on every major platform. Start exploring chords and scales today.
