Music Speed Changer (Classic) - Music Speed Changer (Classic) is an amazing mobile app that enables you to adjust the pitch and tempo of your music to make it slower or faster through sound touch processor.
ChordU - Extracts chords from any song, integrated YouTube.
Audio Trimmer - The simplest way to trim your audio files
Guitaa.com - Turn ANY song into chords, play along with interactive chords and diagram, transpose, loop, tempo control.
Adobe Premiere Pro - Edit video faster than ever before with the powerful, more connected Adobe Premiere® Pro CC.
Chordify - Chordify turns any music or song (YouTube, Deezer, SoundCloud, MP3) into chords.