The latter one has a cornet solo at 1:58 from the pianist in the first video. He was most famous for his cornet material, but was an equally great pianist. We never got a chance to hear much of his piano work, however (In a Mist is his only solo piece on piano) as he wasn't known for piano and he died of pneumonia caused by abuse of unmoderated prohibition era liquor in 1931 at the age of 28 after a sad three year decline. He was one of the greatest pioneers of jazz and was in equal competition with Louis Armstrong as the greatest cornet player of the 1920s. Speaking of whom:
Emrah really does make great transfers of these records. I have all three on their original labels (I have the OKeh for Mahogany Hall), but only the first two in decent condition. Louis is on trumpet for this recording, but same difference.