Build your song structure or use templates and write your own lyrics. Use Chorus-Synchronization to automatically sync all Chorus and Hook parts in your song. When Chorus-Synchronization is activated, all Chorus and Hook elements are based on the text in the first Chorus or Hook. The numbers on the left of a line are counters. The left numbers are the words (white) and the right numbers are the syllables (gray) of the current line.