PlayFlow: Musician Toolbox for YouTube

PlayFlow is a musician's toolbox built right into YouTube. Practice any song with independent pitch and speed control, loop tricky sections, and stay in the flow — all without leaving the video. # Pitch Control • Shift pitch from −12 to +12 semitones • Change the key without affecting playback speed • Match any song to your voice or instrument # Speed Control • Adjust playback from 0.25× to 2.0× • Fine-tune in 0.05× increments • Slow down fast passages for note-by-note practice # A/B Loop • Set A (start) and B (end) points to loop any section • Type exact times or set from the current position • Arrow-key fine adjustment (±1 second) # Smart Loop • Automatically increase speed after each loop cycle • Set the speed increment per loop (e.g. +0.05×) • Set a max speed — PlayFlow stops raising once you reach it • Build up to full tempo gradually without touching a single control # Count-in • Audible count-in (3-2-1) before each loop begins • Choose 1 or 2 bars — matches the current BPM and speed • Visual overlay on the video player so you never miss the downbeat # Metronome • Built-in click track synced to playback speed • Tap Tempo — tap the button to detect BPM instantly • Manual BPM input (40–300) • Live display of the effective BPM at current speed # 3-Band EQ • Low / Mid / High shelving and peaking filters • ±12 dB range with 0.5 dB steps • Cut bass to hear melody, boost mids for vocals, or shape tone to taste • EQ preset saved automatically — persists across sessions # Floating UI • Draggable control panel overlaid on YouTube pages • Minimize to a tiny bar to keep screen space • Stays open across page navigation within YouTube • All controls sync with the popup in real time # PERFECT FOR • Musicians learning songs by ear • Vocalists adjusting song keys • Guitarists and pianists practicing riffs and solos • Language learners slowing down speech • Transcribers needing precise audio control • Anyone practicing along with YouTube videos # PRIVACY • No data collection whatsoever • Works entirely on your device • No account or sign-up required Works on youtube.com and music.youtube.com.