eft-label"> -10 s </span>
                    <span class="right-label"> 20 s </span>
                </div>
            </div>
            <br>
            <div class="l-cb" id="l-audio-upload">
                <form id="audio-upload-form">
                    <input id="audio-upload" type="file" name="song_upload" accept="audio/*">
                </form>
                <div class='progress_outer' id="audio-progress" style="background-color: green;">
                    <div id='_progress' class='progres