More robust fetching of artist / label info

lib/index.js

@@ -192,11 +192,35 @@ async function getArtistOrLabelInfo(artistOrLabelUrl, options = {}) {
         artistOrLabelUrl,
         imageFormat: await _parseImageFormatArg(options.imageFormat)
     };
-    // Some pages don't actually show the 'bio' column.
+    // The landing page of some artists and labels don't actually 
-    // The /music page does seem to always show it though, so parse from that.
+    // contain the 'bio' column, so we fetch from the 
+    // 'music' page instead. For artists, if the 'music' page does not
+    // have the artist info, we shall try with an album or track page
+    // (this is inefficient...perhaps there is a better way?).
     return fetch(utils.getUrl('music', artistOrLabelUrl))
+        .then( res => res.text() )
+        .then( html => parser.parseArtistOrLabelInfo(html, opts) )
+        .then( info => {
+            if (info.type === 'label' || info.name !== '') {
+                return info;
+            }
+            else {
+                return getDiscography(artistOrLabelUrl, options)
+                    .then( discographyItems => {
+                        const firstAlbumOrTrack = discographyItems[0];
+                        if (firstAlbumOrTrack) {
+                            return firstAlbumOrTrack.url;
+                        }
+                        else {
+                            // fallback
+                            return artistOrLabelUrl;
+                        }
+                    })
+                    .then( url => fetch(url) )
                     .then( res => res.text() )
                     .then( html => parser.parseArtistOrLabelInfo(html, opts) );
+            }
+        });
 }
 
 async function getLabelArtists(labelUrl, options = {}) {