What are some alternatives?
When comparing WhatSong and Musixmatch, you can also consider the following products
Shazam - Shazam is a mobile app that recognizes music and TV around you.
SoundHound - SoundHound - the most immersive music search, discovery and play experience on mobile.
Midomi - midomi.com find and discover music and people.
AutoLyric - AutoLyric is a powerful & high performance dynamic lyrics search&display software.
TuneFind - Tunefind contains an index of music and songs appearing in popular television shows and movies. Find a song, or see where an artists music has been featured.
MusicID - Hold MusicID up to music and it'll tell you the name of the song in seconds.