Send an email to "trigger@recipe.ifttt.com". In the body, copy/paste the YouTube URL and in the Subject write the song name. If you're getting a .html file, the video has never been sumbited/converted. Go to 'http://youtubeinmp3.com' and manually download it
If
Send IFTTT any email
Send IFTTT any email at trigger@applet.ifttt.com and this Trigger fires. You can optionally add a single file attachment and IFTTT will create a public URL to the file as an Ingredient. This trigger will reject emails with attachments over 30MB.
Then
Upload file from URL
This action will download a file at a given URL and add it to Google Drive at the path you specify. NOTE: 100 MB file size limit.
Discover more time saving integrations for Google Drive and Email