Read the piece of text or information that needs memorizing aloud. Start with one or two phrases. Then, repeat them aloud and add on a third phrase. Repeat phrases one, two and three. Add on a fourth, and so on. Over-enunciate. This will engage more of your mouth's muscle memory, and your mouth will get used to moving a particular way, in a specific order.
Create an acrostic or a simple sentence. For instance, when memorizing the musical notes on the lines of the treble scale (E,G,B,D,F), use the popular acrostic "Every Good Boy Deserves Favor."
Compose a song. Rhymes and songs tend stay in people's heads more easily than non-musical information. Add a popular melody to your information and it is more likely to remain in your head. If you have a hard time with melody, try creating a distinctive rhythm instead.
Construct a memory palace. Imagine your home, or a building with which you are very familiar. Then, place information that you need to memorize in specific places within the home or building. For example, put something like the number seven in the mailbox, or under the table. Walk through the memory palace mentally and find the information you have left for yourself. If you visualize and personalize the information, it will make a more lasting imprint on your consciousness.
Engage your full body in memorizing. By getting your entire body engaged to remember, you are allowing more muscles to engage in the memorizing process. This will use muscle memory to your advantage. Perform a piece of information such as a poem or speech out loud. Physically gesture at key ideas and words that carry the most value in your information. Eventually, your body will get used to doing the movement, and the words will follow more easily.