[2] In April 1953 he became assistant secretary of the Stanleyville chapter of the Association du Personnel Indigene de la Colonie, a labour union.

[2] In 1960 he was elected as a representative from Orientale Province as a member of the MNC to serve in the Chamber of Deputies of the newly independent Republic of the Congo (Léopoldville)[4] with 2,593 preferential votes.

[9] On 3 October Songolo, in spite of previously having a close working relationship with the deposed prime minister, led a group of MNC parliamentarians in denouncing Lumumba.

[9] There were rumors that Songolo was poorly treated in custody, but a United Nations commission later found no visible evidence to substantiate the allegations.

[10] On the morning of 20 February 1961 Songolo and 14 other political prisoners were shot in Stanleyville after news broke that the central government had allowed for the execution of several pro-Lumumba politicians in South Kasai.