I offer online remote sessions, providing decently-recorded trombone tracks for you to slot into your projects.
How it works:
I charge £30 for up to 3 solid minutes of trombone playing, i.e. I only count the parts of the song I'm playing on, so I could potentially cover a couple of songs for this price. If you need multiple tracks (double-tracking, octaves, harmonies) then that obviously uses up those minutes faster.
Simple, quality signal path: Rath R100 -> Electrovoice RE20 -> Apogee Duet -> WAV (up to 96kHz/24bit) in medium-sized room with a bit of acoustic treatment, for dry, close-mic'd sound. Also available: Holton TR181 bass trombone, Red5 RV15 valve condenser, variety of mutes, other cool spaces/rooms here in Glasgow (this last one may involve a bit of extra planning/cost). I record regularly with trumpet and sax colleagues - if you are looking for a full horn section, I should be able to arrange that for you.
Email for a chat, or here are some off-the-peg options:
Recorded according to your instructions. £30 / £45 / £55 / £70 / £120