"Carl Grunow"" is a pseudonym of Bruno Seidler-Winkler.

“

"Carl Grunow"" is a pseudonym of Bruno Seidler-Winkler.

”

Interesting! Where did you find this information? And what do you think about Alfred Helm, is he also a pseudonym of Bruno Seidler-Winkler?

https://adp.library.ucsb.edu/index.php/matrix/detail/1000005006/13518u-Lord_dismiss_us_with_thy_blessing

https://adp.library.ucsb.edu/index.php/matrix/detail/1000015019/13517u-Ssser_die_Glocken_nie_klingen

https://charm.rhul.ac.uk/discography/search/search_advanced?operatorSel_0=and¶meterSel_0=performer¶meterKey_0=artist_004859¶meterKeyTxt_0=BRUNO%20SEIDLER-WINKLER%20(as%20CARL%20GRUNOW%20(xylophone%20solo)%20o

https://charm.kcl.ac.uk/discography/search/search_advanced?operatorSel_0=and¶meterSel_0=performer¶meterKey_0=artist_004867¶meterKeyTxt_0=BRUNO%20SEIDLER-WINKLER%20as%20CARL%20GRUNOW%20(xylophone%20solo),%20ORCHESTRA

https://grammophon-platten.de/e107_plugins/forum/forum_viewtopic.php?2680.0#post_14322

About "Alfred Helm" there is nothing to be found except Kelly saying it’s "Carl Grunow"...

Kelly’s database also states:
CARL GRUNOW (=BRUNO SEIDLER-WINKLER) (Tubaphonsolo) (o)
1749 ab 4-10-09 X-29367 Halloh! Die grosse Revue: Potpourri, 1 Teil (Paul Lincke) 11521
1750 ab 4-10-09 X-29368 do, 2 Teil 11521
1751 ab 4-10-09 X-29369 do: Walzer-Rondo 11522
1752 ab 4-10-09 X-29370 do: Satyr-Tanz 11522

CARL GRUNOW (=BRUNO SEIDLER-WINKLER) (Xylophonsolo) (o)
1754 ab 6-10-09 X-526758 Halloh! Die grosse Revue: Satyr-Tanz (Paul Lincke) 16587 AL640
1755 ab 6-10-09 X-526759 do: Walzer-Duett 16587
1756 ab 6-10-09 X-526756 Potpourri, 1 Teil 16586
1757 ab 6-10-09 X-526757 do, 2 Teil 16586

BRUNO SEIDLER-WINKLER (xylophone solo with orch.) (=CARL GRUNOW as ALFRED HELM)
183 ab 15-12-08 46858 Bertha Anderstein, Mazurka 26756 36753 X-46767 X-46780 506752 506770 606753 X-526754 626750 236750 236769 566756 467 5289 6341 16585 60071 K465 K472 AL640
184 ab 15-12-08 Sektgeister, Polka-Mazurka (Seidler-Winkler)
184½ ab 15-12-08 X-26785 do X-106784 266751 395 11457
185 ab 15-12-08 46859 Intermezzo russe (Franke) 26757 36754 X-46768 X-56762 506753 506771 X-526755 236751 566757 6341 16585 K465

BRUNO SEIDLER-WINKLER (as CARL GRUNOW) (tubaphone solo) (o)
186 ab 15-12-08 Intermezzo russe (Franke)
187 ab 15-12-08 Hoch Habsburg, Marsch (F N Kràl)
188 ab 15-12-08 X-29333 Die Dollarprinzessin: Potpourri (Fall) 19553 X-69264 X-109351 412 11508

BRUNO SEIDLER-WINKLER (as CARL GRUNOW as ALFRED HELM) (o)
243 ab 21-12-08 46861 Der Matador, Twostep (Penn) [repeated on 417]
244 ab 21-12-08 ’Tween Heather and Lea, Konzert-Fantasie (G H Geldhard) [repeated on 486]
245 ab 21-12-08 46860 Brooklyn Cake-Walk (Thurban) 26754 X-46779 X-66751 X-66758 606751 626751 Cinch 5289 60071

BRUNO SEIDLER-WINKLER (as CARL GRUNOW) (Tubaphone solo) (o)
246 ab 21-12-08 Zigeunerleben-Walzer (Schlieffarth)
246½ ab 21-12-08 49551 do 29297 X-69289
247 ab 21-12-08 Der fidele Bauer: Potpourri (Fall)
247½ ab 21-12-08 X-29334 do X-109352 412 11508

BRUNO SEIDLER-WINKLER (as CARL GRUNOW as ALFRED HELM) (o) (xylophone solo)
417 ab 19-1-09 46861X Der Matador, Twostep (Penn) 26755 606750 626752 60072

BRUNO SEIDLER-WINKLER (as CARL GRUNOW (tubaphone solo) (o)
418 ab 19-1-09 X-29380 Der Matador, Twostep (Penn) 11527 427
419 ab 19-1-19 Radetzky Marsch (Johann Strauss)

BRUNO SEIDLER-WINKLER (as CARL GRUNOW) (xylophone solo) (o)
456 ab 26-1-09 Sprühteufelchen-Polka (Bernhard Winkler)
456½ ab 26-1-09 do

BRUNO SEIDLER-WINKLER (as CARL GRUNOW) (xylophone solo) (o)
482 ab 28-1-09 X-26787 Spruchteufelchen-Polka (Bruno Seidler-Winkler) 246750 276754 939 11458 12304 AL572 T52 T335 T352
483 ab 28-1-09 Salut favorit, Konzert Mazurka (Robert Lotz)
483½ ab 28-1-09 X-26786 do 246751 276755 939 12304 T335 T5251 AL572
484 ab 28-1-09 X-526752 Kätchen-Polka (Brauns) 506754 506768 566754 6340 T5127 T155
485 ab 28-1-09 X-526753 Gretchens Lieblingstanz (Steger) 506755 506769 566755 6340 T-5126 155
486 ab 28-1-09 46862 ’Tween heather and lea, Konzert Fantasie (Geldhard), as ALFRED HELM 6772 26760 X-66757 626753 60072 P117
487 ab 28-1-09 26771 Schwarzwalder Spieluhren P117

BRUNO SEIDLER-WINKLER (as CARL GRUNOW) (tubaphone solo) (o)
488 ab 28-1-09 Glockenblumchen (B Seidler-Winkler)

CARL GRUNOW (=BRUNO SEIDLER-WINKLER) (Tubaphonsolo mit Orchester)
755 ab 15-3-09 Die geschiedene Frau: Potpourri (Leo Fall), 1 Teil
755½ ab 15-3-09 X-29357 do, 1 Teil 19555 X-69268 X-109362 416 11517
756 ab "missing" [probably renumbered as 755½]
757 ab 15-3-09 do, 2 Teil
757½ ab` 15-3-09 X-29358 do, 2 Teil 19556 X-69269 X-109363 416 11517
758 ab 16-3-09 Ein Herbstmanöver: Potpourri (Emmerich Kálmán), 1 Teil
758½ ab 16-3-09 X-29349 do, 1 Teil X-109383 421 11513
759 ab 16-3-09 X-29350 do, 2 Teil X-109384 421 11513

BRUNO SEIDLER-WINKLER (as CARL GRUNOW) (Xylophonsolo mit Orchester)
760 ab 16-3-09 Ein Herbstmanöver: Potpourri (Emmerich Kálmán), 2 Teil
760½ ab 16-3-09 do, 2 Teil 761 16-3-09 do, 1 Teil
762 ab 16-3-09 X-526761 Die geschiedene Frau: Potpourri (Fall) X-66751 X-106786 506761 566751 T-5200 T-259
763 ab 16-3-09 do, 2 Teil
764 ab 16-3-09 X-526760 Die Dollarprinzessin: Potpourri (Fall) X-66750 X-106785 506760 566750 T-5201 T-259
765 ab 16-3-09 Der fidele Bauer: Potpourri (Fall)

CARL GRUNOW (=BRUNO SEIDLER-WINKLER) (Tubaphonsolo mit Orchester)
835 ab 27-3-09 X-529253 Das träumende Schneeglöckchen, Polka (Oertel) 509263 509315 7-259261 279273 599257 6391 16636 R9107 T-5121 T-146
836 ab 27-3-09 X-529254 La Czarina, Mazurka (Ganne) X-49289 509254 509316 7-259256 569257 599252 6392 16637 R9109 T-461
837 ab 27-3-09 The Honeymoon, March (Rosey)
838 ab 27-3-09 X-529255 Schwarzwälder Spieluhren (Doppler) 509255 509317 569258 599253 16637
839 ab 27-3-09 X-29379 Radetzky-Marsch (Johann Strauss I) X-109399 427 11527

BRUNO SEIDLER-WINKLER (as CARL GRUNOW (tubaphone solo) (o)
1001 ab 7-5-09 X-29359 Die oberen Zehntausend: Potpourri (Kerker), 1 Teil 11518
1002 ab 7-5-09 X-29360 do, 2 Teil 11518
1003 ab 7-5-09 X-529262 do: Potpourri 509256 509324 599254 16640
1004 ab 7-5-09 X-529263 do: Marsch 509257 509325 599255 16640
1004½ ab 7-5-09 do: do