Log on to the Internet and open up a search engine browser such as Google.
Enter the word or words of the song that you know into search box, add the word "song" afterwards, include it in parenthesis so that the search engine knows you are searching for a song.
The results will list many websites, with descriptions. A few will be lyric websites, which will feature the words of the song.
Click into the hyperlink that most matches the song you're seeking.
Read the lyrics of the song or, if provided, listen to a sound clip of the song.