The mini sing is practice exercise that helps new songwriters get into the habit of using the core fundamental songwriting and production. I like mini songs because they are less work; it only a chorus, pre-chorus and a verse (sometimes I omit the pre-chorus). I focus on being deliberate with conveying the message and emotion of the song; using melody, rhythm, harmony and lyrics. Unlike a complete song, a mini song doesn't need to be PERFECT or COMPLETE.