This is all Pre Beatle stuff but I think it is interesting for music wrapped around the c -4chord progression and the different melodies surrounding that musical form..First 5 nice Female songs with different tempos and completely different melodies but using that same progression.. https://www.youtube.com/watch?v=KvyOqKhKWQ4 https://www.youtube.com/watch?v=phJvJObVBrc https://www.youtube.com/watch?v=UwX4bjFrP_0 https://www.youtube.com/watch?v=tM_nfDPgcuI https://www.youtube.com/watch?v=9xm3qnh1sck Now for some classic Do- Wop from that same era late 50's early 60's using that same progression. https://www.youtube.com/watch?v=OZ-bdlPqJME https://www.youtube.com/watch?v=94VWNiOcss0 https://www.youtube.com/watch?v=oIX4d-wn7N0 https://www.youtube.com/watch?v=rz_9r1APwM4 The one above was actually written 1961 but not recorded until 1982. https://www.youtube.com/watch?v=j-uiIS5y_W0&list=RDj-uiIS5y_W0 Great music when being a teenager still had some innocence.