diff --git a/yarn.lock b/yarn.lock
index 10aaf01..c82aadb 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1128,12 +1128,6 @@ abbrev@1:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/abbrev/-/abbrev-1.1.1.tgz#f8f2c887ad10bf67f634f005b6987fed3179aac8"
 
-abcjs@5.1.2:
-  version "5.1.2"
-  resolved "https://registry.yarnpkg.com/abcjs/-/abcjs-5.1.2.tgz#113c9e66a8911a0bf7c47c0517a4832b25c6f2e0"
-  dependencies:
-    midi "https://github.com/paulrosen/MIDI.js.git#abcjs"
-
 accepts@^1.3.5, accepts@~1.3.4, accepts@~1.3.5:
   version "1.3.5"
   resolved "https://registry.yarnpkg.com/accepts/-/accepts-1.3.5.tgz#eb777df6011723a3b14e8a72c0805c8e86746bd2"
@@ -6801,8 +6795,8 @@ json3@^3.3.2:
   resolved "https://registry.yarnpkg.com/json3/-/json3-3.3.2.tgz#3c0434743df93e2f5c42aee7b19bcb483575f4e1"
 
 json5@^1.0.1:
-  version "1.0.1"
-  resolved "https://registry.yarnpkg.com/json5/-/json5-1.0.1.tgz#779fb0018604fa854eacbf6252180d83543e3dbe"
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/json5/-/json5-1.0.2.tgz#63d98d60f21b313b77c4d6da18bfa69d80e1d593"
   dependencies:
     minimist "^1.2.0"
 
@@ -7361,10 +7355,6 @@ micromatch@^3.1.10, micromatch@^3.1.4, micromatch@^3.1.8:
     snapdragon "^0.8.1"
     to-regex "^3.0.2"
 
-"midi@https://github.com/paulrosen/MIDI.js.git#abcjs":
-  version "0.4.2"
-  resolved "https://github.com/paulrosen/MIDI.js.git#e593ffef81a0350f99448e3ab8111957145ff6b2"
-
 miller-rabin@^4.0.0:
   version "4.0.1"
   resolved "https://registry.yarnpkg.com/miller-rabin/-/miller-rabin-4.0.1.tgz#f080351c865b0dc562a8462966daa53543c78a4d"
@@ -7449,8 +7439,8 @@ minimist@0.0.8:
   resolved "https://registry.yarnpkg.com/minimist/-/minimist-0.0.8.tgz#857fcabfc3397d2625b8228262e86aa7a011b05d"
 
 minimist@^1.1.3, minimist@^1.2.0:
-  version "1.2.0"
-  resolved "https://registry.yarnpkg.com/minimist/-/minimist-1.2.0.tgz#a35008b20f41383eec1fb914f4cd5df79a264284"
+  version "1.2.7"
+  resolved "https://registry.yarnpkg.com/minimist/-/minimist-1.2.7.tgz#daa1c4d91f507390437c6a8bc01078e7000c4d18"
 
 minipass@^2.2.1, minipass@^2.3.4:
   version "2.3.5"
@@ -9151,15 +9141,6 @@ rc@^1.0.1, rc@^1.1.6, rc@^1.2.7:
     minimist "^1.2.0"
     strip-json-comments "~2.0.1"
 
-react-abc@^0.4.0:
-  version "0.4.0"
-  resolved "https://registry.yarnpkg.com/react-abc/-/react-abc-0.4.0.tgz#1f603d37d34a7b74243a705967129afeea5eba4e"
-  dependencies:
-    abcjs "5.1.2"
-    prop-types "^15.6.1"
-    react "^16.4.0"
-    react-dom "^16.4.0"
-
 react-dev-utils@^4.2.1:
   version "4.2.3"
   resolved "https://registry.yarnpkg.com/react-dev-utils/-/react-dev-utils-4.2.3.tgz#5b42d9ea58d5e9e017a2f57a40a8af408a3a46fb"
@@ -9183,7 +9164,7 @@ react-dev-utils@^4.2.1:
     strip-ansi "3.0.1"
     text-table "0.2.0"
 
-react-dom@^16.4.0, react-dom@^16.8.6:
+react-dom@^16.8.6:
   version "16.8.6"
   resolved "https://registry.yarnpkg.com/react-dom/-/react-dom-16.8.6.tgz#71d6303f631e8b0097f56165ef608f051ff6e10f"
   dependencies:
@@ -9272,7 +9253,7 @@ react-typography@^0.16.13:
   version "0.16.19"
   resolved "https://registry.yarnpkg.com/react-typography/-/react-typography-0.16.19.tgz#5736b47961dcf6b9605b6fa38d41980db2588e28"
 
-react@^16.4.0, react@^16.8.6:
+react@^16.8.6:
   version "16.8.6"
   resolved "https://registry.yarnpkg.com/react/-/react-16.8.6.tgz#ad6c3a9614fd3a4e9ef51117f54d888da01f2bbe"
   dependencies: