Discographical Info Request

While browsing the IMS online search facilities for audio samples of the Brazilian recordings by Gastão Bueno Lobo I came across the following 78 rpm recordings by Orquestra Columbia from 1930:

- Título da Música: angela mia Intérprete: orquestra columbia Compositor: - Acompanhamento: - Gênero: valsa Gravação: 1930 Lançamento: 1930 Gravadora: columbia Disco/Álbum: 5257 Lado/Faixa: lado A

-Título da Música: felicitaciones Intérprete: orquestra columbia Compositor: - Acompanhamento: - Gênero: valsa Gravação: 1930 Lançamento: 1930 Gravadora: columbia Disco/Álbum: 5257 Lado/Faixa: lado B

My curiosity was caught, as both sides of the the record have a Hawaiian guitar in a leading role playing the theme accompanied by strings and sharing lead with an instrument that resemples slide or clay whistle. The music sounds rather Italian (- in the Neapolitan school) and has the same romantic touch as more of Bueno Lobo's own compositions. However, I have not been able to trace this recording in the Funarte database of Brazilian recordings, further I have found no info on the Orqestra Columbia from the time of the recording date. I should be happy, if some of the readers may be able to help with further info and answers to the following:

- Does Gastão Bueno Lobo participate on these two sides, playing the Hawaiian guitar (-and double on banjo at the A-side)?

- Who are the composer and arranger of the two recordings?

- Could it be confirmed, that the recordings were cut in Brazil 1930?

- Did Bueno Lobo cut other recordings for Columbia prior to 1932, as a staff member of the Columbia house band/orchestra?

Any help would be much appreciated, so feel free to post your comment, if you have any info concerning the mentioned recordings.

Jo