scores of / benchmark

偉大なるバリトン歌手フィッシャー＝ディスカウ氏が昨日死去しました。彼もまたレオンハルトやワイセンベルクなど、偉大なる音楽界の「宝」とともに天国に羽ばたいていってしまったのです。　R.I.P. Dietrich Fischer-Dieskau

German baritone singer Dietrich Fischer-Dieskau dies
Once described as "the most influential singer of the 20th Century", he was famed for his performances of Winter's Journey (Winterreise) by Schubert.
Born in Berlin in May 1925, he emerged as a performer after World War II and was swiftly recognised as one of his generation's finest lyrical vocalists.
（中略）
Benchmark

Fischer-Dieskau was most famous for his interpretations of lieder - German art songs written for solo voice and piano.
He performed them around the world, rescued many from obscurity, and made scores of recordings that became the benchmark against which other singers' interpretations were judged.
Klaus Staeck, president of the German Academy of Arts, said his contribution to the German art song was "phenomenal".
"His performances of some of the great roles in opera history shaped the culture of singing," he went on.
Though critics raved about his beautiful voice and musical artistry, Fischer-Dieskau said his aim was simply to get close to the essence of the song.

http://www.bbc.co.uk/news/entertainment-arts-18118722

score「得点」等で使われますが、音楽では「総譜」で使われます。その楽譜の量からか、”scores of ”という表現で「多数の」という表現で使っています。”scores of recordings”で「多くの録音」となります。scoreはまた数字の２０も指します（cf. "I Have a Dream"）。
benchmarkは測量等において利用する際に使われる「水準点」のことですが、この記事では「（音楽的な価値の）基準」です。彼の遺した功績のひとつである、歌曲の録音は後世の歌手の基準としてこれからも目標とされること間違いなしです。(Minnesota)