Here are some basic things you can do to improve traffic on your music content uploaded to YouTube:
[VIDEO DESCRIPTION] (describe the video, what is it about, any relevant info about the artist or the song...etc. as precisely as possible)
Get "[SONG TITLE]" from [ARTIST NAME]: [INSERT ITUNES URL] (generate it with iTunes Link Maker then use a short url generator like smarturl, bitly, georiot, linkfire...etc.
Music video by [ARTIST NAME] performing "[SONG TITLE]".
© [Year] [Label name]
Follow [ARTIST NAME]:
Facebook - [facebook url]*
Twitter - [twitter url]
Instagram - [instagram url]
Official site - [website url]
+ any other networks you may want to add
*URLs shall be formatted with full http or https header in order to be clickable from the YouTube description
Also never forget to tag your video properly / with relevant tags since it will help quite a lot for SEO (Search Engine Optimization)