first, make an account here (hypster.com) dont worry, its free.
then add songs ! its powered by YouTube :3
when youre done, click this:

and then select ‘Classic Player’
it should then, look like this:

as you can see, its really ugly. click the ‘Player Color Scheme’ and customize it however you like.
i recommend making everything one colour, but making the buttons another colour. (that way, nothing will show except for the button)
when you’re done, dont forget to click ‘update’ !
now copy the code on your right. (it says ‘embed code’)
———
we’re not done yet!
go to your blog and select ‘customize’
paste the code into your description.
now, change the width & height to:
w= 50
h= 15

then delete the highlighted parts ~ (starting from <a heref=’)

and the result ?

remember, if you want to change the song, all you have to do is log in on hypster.com and change them. no re installation required because it updates automatically!
i hope this helps !