I just started this - listened to part one.
I can see how it would be exciting during the Wilderness Years.
The Seventh Doctor sounds like he never left.
It doesn’t seem to have aged that well but that might just be how much BF has improved since then.
I’m interested to hear what happens next!
I started listening and didn’t understand anything at all. Found some summaries and will try again. 
I can see how it can be a bit confusing as it essentially opens in the middle of things and then the cliffhangers don’t get immediate resolutions. There’s a link in the “Favorite 6th Doctor Audios” thread to transcripts for this and several other Big Finish stories of that would help follow along.
Thank you! That’s very helpful. I’m german and so audio only is a bit difficult. Video with english subtitles is better. 
I really wish they all had transcripts, I’m a native English speaker and reading while I’m listening makes absorbing things much easier, it’s what I do with audio books when I can
Here’s the link: Doctor Who Audio Scripts Main Range Collection : Various : Free Download, Borrow, and Streaming : Internet Archive
It only goes through Main Range #264, but also has a scattering of other stories mixed in.
Since you’re German, you might be interested in this: Doctor Who auf Deutsch - Ranges - Big Finish. There’s only six and they’re all Tenth Doctor stories, but it might be of interest to you.
I’ve listened to part 2 now.
(As much as I don’t like it being in 4 parts when I’m trying to listen to it all in one go, I appreciate the ‘chapters’ for when I only have 30 mins at a time!)
I’m a bit confused by something, spoilers tag for part 2:
The Doctor speaks German here, but Helen doesn’t understand him and cannot speak it herself. Is this because the Revival series established that it’s the TARDIS doing the translation and that it kicks in for everyone around him, and Classic doesn’t have any explanation for it yet? Are we supposed to believe the Doctor just knows German, and it sounded like English for us for ease of the story?
Or does the Doctor pick and choose who it translates for?
Does someone have to travel in the TARDIS to get the gift? Now I’m thinking about all the times it’s translated in the past and wondering which of these could account for it…
The Classic Series did touch on the translation issue briefly in Masque of Mandragora. As for the character in question, it is explained in Part 4.
I finished listening to this today.
I really enjoyed part 4 where it became a multi-Doctor story. I just love how they interact with each other 
some very funny one-liners.
But all in all, I didn’t really get on with the story. Too disjointed at the start, and the explanation is just a huge info dump.
The Temperon’s voice was so annoying as well
So I rated it 3/5 - a good effort, some great performances, just not the best story. I’m glad I finally listened to it though!
I added some of my favourite quotes to the story page - let me know if there are any you picked up on and I’ll add those! And if I’m missing any info on this page please let me know - listening to them together is a good way to finalise these story pages!
Looking forward to the next one.
“It is explained in part 4”? I must have totally missed that!
I think the idea is that because Helen is a Siren of Time and not human, the TARDIS doesn’t affect her. At least, that’s how I understood it.
Totally agree, it’s enjoyable enough for what it is and it’s great to have all the Doctors there, but the actual story is pretty forgettable and when I find something dull, I tend to zone out so I’m not sure I’ve ever fully understood Sirens 
but though it’s not the best audio ever it’s definitely not the worst 
For a first outing in a time when new Doctor Who was a seemingly unfulfillable dream, this is great. It starts the range with a bang that I’m sure at the time was well-regarded. Now, when we have an overabundance of Who in all mediums and new stuff on TV, it feels rather average with the highlight being the Doctor interactions in Part 4. Personally, I like the next two a lot better.
As I’ve said, for those of us who listened to is fresh in 1999, it was simply amazing! The TV Movie had gone nowhere and Doctor Who, basically, was dead in the water as a TV show. Proper performed Doctor Who with original cast members was so exciting. The Sirens of Time isn’t perfect but I think its a damn good foundation for what came after.
It was hugely exciting at the time. I remember getting the CD through the post and I put it on as I decorated our bathroom (a hideous mistake; it was in the days of Changing Rooms being on BBC1 prime time and the use of “bold colour” was all the rage, so I chose a deep green and ended up with a horrible dingy dark room that I had to repaint almost immediately afterwards, but I digress). It was the closest thing to new Doctor Who that we were going to get. It was so exciting listening to the intro on Gallifrey. “Which timelord?” “The Doctor” Squee! I relistened a couple of years back and, yes, it didn’t stand out compared to everything we’ve had since then, but when it was the ONLY new Doctor Who available, it was ****ing amazing!
So, I just listened to Part 2. At least the Seventh Doctor episode has an interesting mystery. This is just kinda boring, at least to start with. It does get more interesting as it goes on. I like the mention of Tegan and Turlough. Sarah Mowat is a decent actress who I wouldn’t mind Big Finish bringing back (yes I know she’s a major part of Dalek Empire, which is a series I haven’t listened to yet). Mark Gatiss is nearly unrecognizable as the U-Boat Captain, though are a couple points where I can tell, but only because I’m listening for it. Tardis wiki explains how the Sirens’ web is meant to change history, but I’ll discuss that when I get to Part 4. Also, the cliffhanger for this one is a little lackluster. I get what they’re trying to do with this story and I get using a multi-Doctor story as their big premier. I’m just not in love with this story. And I think I get more bored with each subsequent re-listen.
The only quote I remembered from first time I listened was 7 shouting “ELENYA!”
Episode 3 and the Sixth Doctor’s solo episode. So we finally learn that the Knights of Velyshaa are who is invading Gallifrey, before we move on to the Doctor. Colin is, for me, the actor who most sounds like they never left the show in this story. He’s kinder here, but still has that arrogant edge his Doctor has. Mark Gatiss is much more recognizable here as the captain of the Edifice. I do think that, of the three solo-Doctor episodes, this one is my favorite. It definitely sticks in my mind more than the previous two. After McGann, I definitely think that Colin is favorite audio Doctor. This is definitely the most interesting of the first three episodes some some ideas that I wish were expanded on in future story. In fact, I think this episode could’ve been expanded into a full story on its own. The Temperon is an interesting idea, one of a few in this story that carry over from the old Audio Visual range of fan-made productions. Whereas the first two episodes aren’t anything overly impressive, this was more fun and makes me want to finish the story right away.
I have all these somewhere but have never got past the first 10 minutes of the first one. I’m really intrigued by them though to see where Big Finish (and BBV) started.