1: For playback alone, just use a player containing an EQ plug-in. Using Cool Edit Pro, you can make a lot of changes to music, cut, merge, reduce noise, and insert whatever you want to change the tune. You can search and download it through Thunder.

2: This can be achieved by adjusting the equalizer in the music settings.

3: Open the software, "File" - "Open File" and import the music file that needs to be downtuned. Then double-click the accompaniment file or click the switch button in the upper left corner of the interface, as shown in the figure below, to enter the single track editing interface.

4: Select "Effect" - "Shift/Pitch" - "Transmission..." in the menu bar (this is not a pitch changer). As shown below, there is a second way to enter the transmission window in the effect options bar on the left.

5: Open the "Variation Speed" editing window, as shown below. "Transformation" should be selected as "None" at the beginning to prevent the software from changing the pitch at the beginning. If the "ratio" of the original speed is 100, you can select it. as well. "Preview" to listen to see if it is at the original speed.

6: Select "Pitch" (maintain speed) for the variable speed mode, and select high precision for the accuracy. Then open the "Transform" drop-down option box, as shown in the picture below, choose the one with "b" for the falling tone, 1 b means falling a tone, that is, lowering a semitone, 2 b means a whole tone; and so on, choose the rising tone with "# " number, the method is the same as falling intonation. Once you are satisfied with the preview, click OK.

7: Finally, we can save the flat accompaniment to the computer hard drive. Select "File" - "Save As" from the menu bar.

8: Select the save directory, define the file name, select the save type as needed, and "Save".

The dividing line between ascending and descending keys is C major and A minor, neither rising nor falling. Sharp keys: 1 sharp sign is G major and e minor; the notes are: (use simplified notation, please) major keys: 5, 6, 7, 1, 2, 3, #4; minor keys: 3, #4 ,5,6,7,1,2. The two sharps are D major and B minor; the notes are: major: 2, 3, #4, 5, 6, 7, #1; minor: 7, #1, 2, 3, #4, 5, 6. The three sharps are A major and #f minor; the notes are: major: 6, 7, #1, 2, 3, #4, #5; minor: #4, #5, 6, 7, #1 ,2,3. The 4 sharps are E major and #c minor; the notes are: major: 3, #4, #5, 6, 7, #! , #2; minor key: #1, #2, 3, #4, #5, 6, 7. The five sharps are B major and #g minor; the notes are: 7, #1, #2, 3, #4, #5, 6; minor keys: #5, 6, 7, #1, #2, 3 , #4. The 6 sharps are #F major and #a minor. (Because it is the same tone as bG major and be minor, it is generally not used) 1 flat is F major and d minor; the notes are: major: 4, 5, 6, b7, 1, 2, 3; minor :2, 3, 4, 5, 6, b7, 1. The two flats are bB major and g minor; the notes are: major: b7, 1, 2, b3, 4, 5, 6; minor: 5, 6, b7, 1, 2, b3, 4. The three flats are bE major and c minor; the notes are: major: b3, 4, 5, b6, b7, 1, 2; minor: 1, 2, b3, 4, 5, b6, b7. The four flats are bA major and f minor; the notes are: major: b6, b7, 1, b2, b3, 4, 5; minor: 4, 5, b6, b7, 1, b2, b3. The five flats are bD major and bb minor; the notes are: major: b2, b3, 4, b5, b6, b7, 1; minor: b7, 1, b2, b3, 4, b5, b6. The six flats are bG major and be minor; the notes are: major: b5, b6, b7, b1, b2, b3, 4; minor: b3, 4, b5, b6, b7, b1, b2.