Scale LED Indicator A scale LED indicator shows which scale is active during play, providing clear visual feedback and making it easy to switch scales on the fly. Strum/Play Mode Two modes for versatile practice and performance: Strum Mode lets you follow a music score by strumming, while Play Mode lets you play builtin music tracks. Three tones Three tonal ranges are available: Treble, Alto, and Bass. Use the left button to switch between them for different sound perspectives and practice needs. Seven Musical Scale The device supports seven musical scales, enabling flexible practice and performance across different keys. Use scenarios Learning the score: In Strum Mode, follow a music score while watching the scale indicator to keep track of key changes and practice timing. Practicing with builtin tunes: Switch to Play Mode to play the builtin music, and use Treble, Alto, or Bass to suit your current practice focus. Key and tone exploration: With seven scales and three tonal ranges, you can experiment with different keys and ranges to develop pitch awareness and versatility.