By Tom King We continue our look back at the music of 50 years ago….. How many pop songs have been written about a broken heart? 5000? 10,000? a million?? Is there a deeper vein that a songwriter can tap than his or her own misery after a love affair gone wrong? You wouldn’t think so by the output of such songs in the 1970s. Graham Nash had joined Crosby, Stills and Young in releasing a solo record, Songs For Beginners, after the group splintered in 1970. They had released the iconic “Deja Vu” LP the previous year but could not hold it together.