I have been waiting for a revival of Friedrich Theodor Fröhlich's Lieder since I first encountered five of them sung by Ernst Haefliger.
I couldn't imagine that a singer of acclaimed reputation would wish to study and perform them, though. Obviously Ian Bostridge thought high enough of them to present a complete song cycle to poems by Wilhelm Müller.
Swiss radio SRF2 will broadcast the concert in December:
https://www.srf.ch/audio/im-konzertsaal/eine-entdeckung-ian-bostridge-singt-lieder-von-theodor-froehlich?id=12089843 (https://www.srf.ch/audio/im-konzertsaal/eine-entdeckung-ian-bostridge-singt-lieder-von-theodor-froehlich?id=12089843)