chord composer is a composer software with automactic accompaniment function, with built-in 100 accompaniment styles make it easy for the user to quickly design a perfection song. 1.there are 100 styles in software, you can select more then one style on one song for accompany. 2.you can select one of "inte, normal, bridge, fillin1, fillin2, endinf" section for each style. 3.with this styles, you just edit the melody track for any song. 4.the intelligent lyrics input function makes it easy for the user to produce lyrics 5.importing and exporting from/to midi , and the user can further refine it with the help of other musical softwares.