# RetroPlaylistDuration

AndroidWorld, 2026-11-09. Agent: Lusor, model: DeepSeek V4.1 Flash (low).

## Goal

Create a playlist in Retro Music titled "Country Classics 417" with a duration between 45 and 50 minutes using the provided songs.

## Result
- Mobilerun's grader: pass
- Google's grader: pass
- Lusor time: 240.2 s; Mobilerun published time: 494.9 s (2.1x faster)
- Lusor model cost: $0.0798; Mobilerun estimated cost: ~$2.30
- Lusor tool calls: 49; Mobilerun published actions: 30
- App skills: read broccoli; none has rules for this task

## Final report

I created the playlist "Country Classics 417" in Retro Music with 7 songs from the device library, and its own header shows 7 Songs and a total of 47:32, inside your 45 to 50 minute range. The songs, in playlist order, are Endless Summer (4:54), Eternal Flame (3:52), Heartbeat Away (10:20), Moments (4:42), Twilight Calling (10:37), Beyond the Horizon (9:48) and City of Stars (3:17). I picked these from the 15 songs on the phone so the total lands comfortably inside the window rather than on its edge.

## Steps (49; times are seconds into the video)

| # | Start | End | Tool | OK | Note |
|---|---|---|---|---|---|
| 1 | 36.82 | 36.88 | read | yes | Check for a Retro Music skill; none listed, so inspect current screen |
| 2 | 36.82 | 36.88 | get_ui_state | yes | Read current screen |
| 3 | 38.45 | 38.45 | list_sheets | yes | Check sheets for provided songs |
| 4 | 39.56 | 44.52 | launch | yes | Launch Retro Music and read home screen |
| 5 | 45.23 | 46.35 | get_ui_state | yes | Read Retro Music home screen |
| 6 | 47.89 | 50.82 | tap_element | yes | Open Songs tab and read song list |
| 7 | 52.65 | 60.27 | map_app | yes | Map full song list to inventory titles |
| 8 | 61.88 | 61.92 | get_ui_state | yes | Open song menu to find durations |
| 9 | 63.00 | 64.07 | tap_element | yes | Open Endless Summer song menu and inspect options for duration info |
| 10 | 65.34 | 65.54 | tap_element | yes | Read Details dialog for Endless Summer duration |
| 11 | 66.61 | 66.63 | get_ui_state | yes | Read Details dialog content |
| 12 | 69.08 | 69.68 | tap_element | yes | Dismiss dialog, then read remaining song durations via Details |
| 13 | 75.22 | 78.77 | chain | yes | Read Eternal Flame duration via Details dialog chain |
| 14 | 80.23 | 80.24 | get_ui_state | yes | Confirm dialog closed and continue durations |
| 15 | 81.31 | 82.40 | tap_element | yes | Dismiss Details dialog, read Heartbeat Away duration |
| 16 | 87.76 | 91.01 | chain | yes | Read Heartbeat Away duration and dismiss with back |
| 17 | 95.24 | 118.01 | chain | yes | Read durations of Moments, My Heart is Yours, Mystic Journey, Rising Sun, Twilight Calling, Under the Sky, Voices in the Hall |
| 18 | 121.42 | 123.51 | scroll_to | yes | Scroll to list top to read remaining song durations |
| 19 | 126.76 | 145.58 | chain | yes | Read durations for Beyond the Horizon, Bright Lights, City of Stars, Dreamer's Awake, Echoes of Silence, then Twilight Calling |
| 20 | 148.95 | 152.88 | chain | yes | Read Dreamer's Awake duration |
| 21 | 155.32 | 156.44 | tap_element | yes | Open Dreamer's Awake menu and read Details |
| 22 | 157.54 | 158.73 | tap_element | yes | Read Dreamer's Awake Details length |
| 23 | 160.15 | 161.22 | tap_element | yes | Dismiss dialog, scroll to Twilight Calling, read its duration |
| 24 | 162.50 | 164.51 | scroll_to | yes | Scroll to Twilight Calling and read its duration |
| 25 | 165.46 | 166.24 | tap_element | yes | Open Twilight Calling Details to read duration |
| 26 | 167.33 | 168.53 | tap_element | yes | Read Twilight Calling length |
| 27 | 172.29 | 172.49 | calculate | yes | Compute a song subset with total 45-50 min |
| 28 | 174.97 | 175.15 | calculate | yes | Pick a subset summing safely inside 45-50 minutes |
| 29 | 177.17 | 178.24 | tap_element | yes | Dismiss dialog and open Playlists tab to create the playlist |
| 30 | 179.47 | 180.47 | tap_element | yes | Open Playlists tab and create new playlist |
| 31 | 181.97 | 182.97 | tap_element | yes | Open Playlists more options to find New playlist |
| 32 | 183.96 | 185.24 | tap_element | yes | Tap New playlist and enter name |
| 33 | 186.45 | 191.93 | chain | yes | Type playlist name and create it |
| 34 | 193.35 | 194.24 | tap_element | yes | Open the new playlist to add songs |
| 35 | 195.37 | 196.43 | tap_element | yes | Inspect playlist menu for add-songs option |
| 36 | 198.48 | 198.93 | key | yes | Close menu, go to Songs tab to add songs |
| 37 | 200.30 | 201.38 | key | yes | Return to Playlists, then tap Songs tab |
| 38 | 202.85 | 204.21 | tap_element | yes | Open Songs tab to add songs to playlist |
| 39 | 206.24 | 208.36 | chain | yes | Open Endless Summer menu and choose Add to playlist |
| 40 | 209.49 | 209.76 | get_ui_state | yes | Read playlist picker dialog |
| 41 | 211.51 | 212.37 | tap_element | yes | Add Endless Summer to playlist and confirm |
| 42 | 215.48 | 230.99 | chain | yes | Add Eternal Flame and Heartbeat Away to the playlist |
| 43 | 232.26 | 234.49 | scroll_to | yes | Scroll up and add Beyond the Horizon and City of Stars |
| 44 | 235.97 | 242.66 | chain | yes | Add Beyond the Horizon and City of Stars to the playlist |
| 45 | 244.46 | 245.56 | tap_element | yes | Open Playlists and the playlist to verify songs and duration |
| 46 | 247.33 | 248.44 | tap_element | yes | Open playlist page and read its songs |
| 47 | 250.73 | 265.87 | map_app | yes | Recount playlist rows with map_app, then done |
| 48 | 267.80 | 267.86 | get_ui_state | yes | Confirm current screen and playlist card values |
| 49 | 273.27 | 273.27 | done | yes | Report result |

## Files
- Video: video.mp4 (H.264), video.webm (VP9); poster: poster.webp
- Data: task.json, steps.json