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The original structure of a song: verse, chorus, verse, chorus, bridge, and chorus. Nevertheless, it would be a good idea to be innovative, so you can split that structure and arrange it in a catchy and unique way. According to a songwriter Robin Frederick, “Many recent hits add a short section called a “pre-chorus” or “lift” between the verse and chorus to build anticipation.” Therefore, it is important not only to create content that defines who you are, but also to make a structure that communicates perfectly the thoughts you have, so the listeners are going to feel identified with you.
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A good tip to choose a melody for your song would be to hum any rhythm you have in mind. Then, continue till you feel you are getting into the right melody for your song. Therefore, try to add the lyrics already written while humming. However, it is essential to remember about producing a different melody for the verse and the chorus to avoid a monotonous sound in the song.
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There are plenty types of apps on the app stores such as “Music Maker Jam”, where you can mix and elaborate the music, record your voice and lastly finish your masterpiece.
As an advice, you should find a key place for writing a song. Try to relax and feel comfortable, so your thoughts and inspiration will come out soon. Be careful not to stealing words from other songs, that is plagiarism. it is unprofessional and you can go to jail. Therefore, be unique and clean in your creation, show you real being to others. Do not stress out and enjoy your artistic moment.