I'm learning a language that is morphologically rather unrelated to my native tongue. I find great difficulty in retaining vocabulary in this new language, to the point where I have reached something of a plateau as words that are not 'everyday' simply don't get a chance to stick in my mind.
The one exception to this is songs - I find that once I have learned a song and its lyrics, it sticks in my mind a lot more easily than isolated words. This may be partly just because learning words in context is helpful, but I'm sure it's also because I enjoy the activity of listening to songs, and the association with a melody seems to help greatly, as mentioned here.
Learning a song initially can be time-consuming, though. So I am wondering - are there any recognised or suggested techniques for efficiently learning vocabulary through songs?
For my purposes, it can be assumed that I have access to lyrics and a reasonable quality translation, if those are helpful.