BassNotes.kv

#:kivy 1.0.9
#from math import round

<BassNotes>:
    orientation: 'vertical'
    Label:
        id: beat
        font_size: '120sp'
        bold: True
        text: '1'
    BoxLayout:
        size_hint_y: 0.2
        Slider:
            id: bpm_slider
            value: 120
            min: 30
            max: 180
            step: 5
        Label:
            text: str(int(round(bpm_slider.value)))
            text_size: self.size
            font_size: '35sp'
            size_hint_x: 0.25
            halign: 'left'
            valign: 'middle'
    ToggleButton:
        text: 'Play Sound'
        font_size: '30sp'
        state: 'down'
        id: sound
        size_hint_y: 0.2

    Label:
        id: note
        font_size: '120sp'
        text: 'E'
        bold: True
    BoxLayout:
        size_hint_y: 0.2
        Slider:
            id: show_slider
            value: 4.0
            min: 1.0
            max: 4.8
            step: 0.2
        Label:
            text: str(round(show_slider.value, 1))
            font_size: '35sp'
            size_hint_x: 0.25