SongKeyPad: Offline BPM, Key & Chord Analysis for Windows

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The electronic music production landscape constantly evolves, and tools that streamline workflow while prioritizing user privacy are increasingly valuable. Introducing SongKeyPad v0.1.0, a new standalone Windows application designed for comprehensive audio analysis. This software enables musicians, producers, and DJs to quickly determine the BPM, musical key, and timestamped chord changes of their audio files, all performed entirely offline.

Offline Analysis & Privacy Focus

A core distinguishing feature of SongKeyPad is its commitment to privacy. Unlike many online services or cloud-based applications, SongKeyPad conducts all its analysis directly on your PC. Consequently, audio files never leave your machine, ensuring that unreleased tracks, private demos, stems, and client material remain secure. The application contains zero networking code; therefore, there are no uploads, no accounts, no in-app analytics, and no telemetry. This design choice offers significant peace of mind, particularly for those working with sensitive or proprietary audio content. Moreover, microphone recordings are processed locally and automatically cleaned up, further reinforcing the privacy-centric approach.

Intuitive Workflow & Comprehensive Features

SongKeyPad streamlines the analysis process into a tactile, macro-keyboard-like interface. Users can easily drag and drop various audio formats, including MP3, WAV, FLAC, M4A/AAC, and WMA files. Alternatively, a microphone quick-scan feature allows for immediate analysis of recorded passages. Once loaded, the application analyzes the audio to provide tempo in BPM, musical key, and a detailed, timestamped chord timeline. Importantly, every result includes a confidence percentage and an alternate reading, enabling users to verify the accuracy and make informed decisions. Furthermore, the chord timeline is fully editable, allowing for corrections, boundary adjustments, and retagging of chords, ensuring the final output aligns with the user’s auditory judgment.

For those needing to integrate analysis into other parts of their workflow, SongKeyPad offers robust export options. Users can copy the progression with a single key or export the data to text, CSV, or JSON formats. This flexibility supports various applications, from session notes and spreadsheets to custom scripts and advanced production workflows. The tool also features a song map for sustained tempo and key changes, a chord inspector with note and chord playback, and playback speed controls with range looping and click-to-seek waveform functionality. Overall, SongKeyPad aims to provide quick, reliable answers for critical musical parameters without compromising data security.

Features

  • Instant BPM, key, and chord detection – entirely offline
  • Honest confidence percentages with alternate readings
  • Timestamped, fully editable chord timeline with undo/redo
  • Song map of sustained tempo and key changes
  • Chord inspector with note and chord playback
  • Playback speed knob, range looping, click-to-seek waveform
  • Analyze any selected section of a track
  • Microphone quick-scan with automatic analysis
  • Export to text, CSV, or JSON
  • Seven themes plus Adaptive color matched to the song

Price
One-time purchase: $2.99 USD

Availability

SongKeyPad v0.1.0 is available now for Windows 10 and 11 (64-bit). It is offered as a one-time purchase, ensuring no subscriptions, accounts, or in-app purchases are required. This model contrasts with many free web analyzers that demand audio uploads or subscription apps that incur recurring costs, positioning SongKeyPad as a cost-effective and privacy-conscious solution for music analysis.

👍 Pros

  • ✓ Performs all analysis entirely offline, ensuring privacy for unreleased tracks and sensitive audio.
  • ✓ Features a fully editable and timestamped chord timeline, allowing users to correct and refine results.
  • ✓ Offers flexible export options to text, CSV, or JSON for integration into various workflows.
  • ✓ One-time purchase model with no subscriptions, accounts, or in-app purchases.
  • ✓ Supports a wide range of audio formats (MP3, WAV, FLAC, M4A/AAC, WMA) and microphone input.

👎 Cons

  • ✗ Currently limited to Windows 10/11 (64-bit) only, excluding other operating systems.
  • ✗ Does not offer batch scanning for entire music libraries or direct integration with DJ software for tag writing.
  • ✗ Microphone input is a quick-scan feature, not continuous real-time monitoring.
  • ✗ Analysis is an assistant, not ground truth, requiring user verification for accuracy.

More info: SongKeyPad | SongKeyPad v0.1.0