The beginning chord of Procol Harum's Salty Dog, Name?

[Joachim Kettner]

I am not a piano player, so I tried it on guitar: A C-chord with an added F-sharp on the high E-string worked. Now I wonder what it is called.
https://www.youtube.com/watch?v=R7PtEKuipvE

[Mike Neer]

Bbm6/Db (where the Db is in the bass), Could also be Gm7b5/Db

[Will Houston]

Great song whatever the chord is.

[Ian Rae]

This is an interesting one. It contains only Db, F and G - so it can't really be called a Bb chord. The next two chords are Csus and C, so it's functioning as a subdominant in the expected key of Fm (although that cadence is interrupted by a return to Db), and is therefore a Gm7b5 chord (as Mike suggests) but without the Bb.
So on the steel, it's not really a named chord, but a cluster you can reverse-engineer from your Csus of choice.

[Joachim Kettner]

Thanks for the replies. The guitar I've used for figuring out the chords was tuned a half step up. For me now playing in the right key is Db. I'm on the ninth fret ( which is probably not the correct position) holding down strings 1 and 2 with my index, and fretting the G-string on the 12th fret. It doesn't sound wrong, but still not perfect. ! would rather play it further down the neck, like many guys in the tutorials do, but I haven't arrived there yet.
My interest in this song was revived by reading Stefan Zweig's biography of Magellan recently, and other books by J.Conrad.

[Ian Rae]

9th fret sounds right. I'm not near an instrument at the moment, but on 5,6 and 8 engage the X lever, then release it while sliding back to the 8th, engaging the B and then releasing it.
There will be other ways....