This is a quick lesson I came up with, morphed from a few others. I've made it exclusively for girls but can be easily adapted to a boys or mixed classroom.
I give the students a copy of Music Worksheet 1 - and explain that we will be listening to four songs in English. All they have to do is listen to the song and complete the song chart. I load 4 songs on youtube.com, preferably with English subtitles, and after each song review the answers. The four songs I chose were:
1)Westlife - My love 2)Wondergirls - So Hot 3)Britney Spears - Oops and 4)Big Bang - last farewell. I know that two of these songs are Korean, but it keeps the girls interested in the activity, and often they just sing the words but have no idea what they mean! So good for them to know what the songs are actually about. This section takes 20-25 min.
With the assistance of the co-teacher I then conduct a short role play on music, with a fill in the blanks chart for the students to fill out as they listen. You will usually need to conduct the role play twice. After this I review the answers on the board and award points or prizes for the correct answers. This takes 5-10 min.
To finish off, i get the students to write their own role play about music in their notebooks, in groups of two or three. I leave it pretty open that they can write anything they want, as long as it is on the topic of music or songs. This ususally takes the students 10 min or so to write and rehearse. Then extra points or prizes are given in the time remaining, to those students willing to come up and perform their role play in front of the class, usually very funny.
So 50min-1hr lesson in total, and one of the few lessons I've taught, where all the students are willing to wake up and participate. Have fun!