I improvised at the keyboard over multiple tracks and brought the midi into Music Maker then brought up the tempo, and applied echo, delay and effects phaser.
七雷迴聲7.wav
聲道：2
類型：wav
experimental、alternative、piano、keyboard、dramatic、delay、echo、keys、phaser、instrumental
試驗、替代、計劃、鍵盤、戲劇性、延遲、迴聲、按鍵、移相器、儀器的
資料來源：freesound ( https://freesound.org )