...evidently a 49-minute monster, dating from 1911:
https://www.jpc.de/jpcng/classic/detail/-/art/bruckner-klose-streichquartette/hnum/11905007
IMSLP tells us that it's been recorded before - thanks, Eric!
https://imslp.org/wiki/String_Quartet_in_E-flat_major_(Klose%2C_Friedrich)
From the blurb at Presto:
Like Bruckner, Klose strongly sympathized with Wagner and the proponents of programme music, and chamber music had not appealed to him very much up until the moment he embarked on his only string quartet composition. Sarcastically, he subtitled it a "tribute paid in four instalments to my stern German schoolmasters", yet he demonstrates a full mastery of the conventions of musical form, paired with an almost unprecedented wealth of musical ideas.
https://www.prestomusic.com/classical/products/9642362--bruckner-klose-string-quartets
Interesting - this is an 85-minute CD.
Is that a record length? (excuse the unintended pun)
I'm pretty sure there have been longer durations, but I couldn't give you chapter and verse.
Hmm, I shall definitely be sampling this one carefully before committing.
Excerpts at Pentatone's website:
https://www.pentatonemusic.com/product/bruckner-klose-string-quartets/
Right up my late-romantic Straße!
Thanks, Alan.
Here's the complete work (all 48:55 of it!) on YouTube:
https://www.youtube.com/watch?v=4fpLeGRQRiA
I said it'd be right up my street, but does it outstay its welcome?