some chords remix contest

<use xlink:href="/assets-global/icons/svg-sprite.svg?v=2019-06-25-232634-a81aa9e-013492#ico_plus"> <use xlink:href="/assets-global/icons/svg-sprite.svg?v=2019-06-25-232634-a81aa9e-013492#ico_minus">

<use xlink:href="/assets-global/icons/svg-sprite.svg?v=2019-06-25-232634-a81aa9e-013492#ico_plus"> <use xlink:href="/assets-global/icons/svg-sprite.svg?v=2019-06-25-232634-a81aa9e-013492#ico_minus">

<use xlink:href="/assets-global/icons/svg-sprite.svg?v=2019-06-25-232634-a81aa9e-013492#ico_plus"> <use xlink:href="/assets-global/icons/svg-sprite.svg?v=2019-06-25-232634-a81aa9e-013492#ico_minus">

<use xlink:href="/assets-global/icons/svg-sprite.svg?v=2019-06-25-232634-a81aa9e-013492#ico_plus"> <use xlink:href="/assets-global/icons/svg-sprite.svg?v=2019-06-25-232634-a81aa9e-013492#ico_minus">