Oddly for me (an atheist) it is choral music rather than Opera that can really have an impact. Mozart's Grand Mass in Cm, and Thomas Tallis Spem in Allium are two very different but great examples.
Occasional Spotify user here. I only use it for reference and anything I want I will buy a physical copy. Have a real problem with their business model and sound quality. An example was listening to Searching For the Young Soul Rebels - I couldn't believe how bad it sounded. Bought the CD and it was every bit as good as I remembered.
Just seen the rest of the pictures. That's a great bass with no caveats. When you do add the caveats of your then lack of knowledge, experience, and the lack of available knowledge and resources 50+ years ago, this is absolutely exceptional.
Update 2 - the importance of promotion: seeing on Bandcamp the Andy Rourke credit I realised I had liked your stuff before, but with so much else going on I had forgotten. You need to keep reminding people (especially those of us of a certain vintage) 😆
Keep up the great work!
Don't be daft, you're on national radio in a nation with a very fine heritage of music. You should be dead chuffed and promote it and much as you can!
Off to listen to it now, and congratulations!
If anything, slackening off the other strings will be the bigger problem as the tension across the neck will be way off kilter. Semitone up no problem.