The phrase "although I spoke" is correct and usable in written English.
It can be used to introduce a contrast or exception related to what was said or the context of speaking.
Example: "Although I spoke confidently during the presentation, I felt nervous inside."
Alternatives: "even though I spoke" or "despite my speaking".
Although I spoke encouraging words from Chicago, I didn't believe my mother's beloved horses stood a chance.
Although I spoke with a number of Administration officials, including David Axelrod, I looked for answers outside the Kabuki theatre of Washington personalities — in Obama's world view, and in the thoughts of ordinary people.
Although I spoke at length with your reporter, I am disappointed that he felt unable to present a more balanced view.Dr Stephen Miller Medical director NHS Connecting for Health Choose and Book Programme LondonSIR – You argue that the private sector has had more success in utilising the internet than the public sector.
Although I spoke with him yesterday, I sadly do not think I will have time to visit him.
I found that, although I speak fluent Spanish, my brain froze.
Although I speak passable German, I spent hours with a German dictionary trying to understand the rules, which included the stipulation that the stay had to be paid in full in Swiss francs at least two weeks in advance.
It's not as if I need the sweets in order to stay sober, although I speak as a man safe in the knowledge that he has a cinema-size sack of M&Ms sitting in his desk drawer.
Although I speak neither Portuguese nor Spanish, I remained thoroughly engaged albeit with a keen awareness of the paucity of black presence within this conceptual hemisphere.
She listened respectfully, although as I spoke I thought I noticed her turning up her iPod.
Others saw him as dangerous, although those I spoke to said that the complaints they heard stopped short of alleging sexual abuse.
Nor, according to network sources, has Olbermann bothered to hide his low regard for Matthews, although when I spoke to him, Olbermann denied any personal animosity toward Matthews and told me that he appreciates his "John Maddenthusiasmthusiasm for politics".
